Tip: Playing with the sound on might help a bit. :))

level 1: Touch the red light
level 2: Tap the enemy 5 times
level 3: Tap the 4 flying shurikens, and the one static shuriken next to “touch 5″
level 4: Tap the N magnet
level 5: Tap the top right cloud. (move the bottom left cloud to discover secret #1 *Thank you Stavros)
level 6: Don’t do anything, just wait
level 7: Pop the balloons from right to left
level 8: Drag the bubble into the square on the right
level 9: Tap 5, 25, 10, 5
level 10: Tap the bottom left fish
level 11: Tap the bottom right blue square
level 12: Drag every thing into the black hole
level 13: Touch the words at the top : orange, green, blue, red
level 14: Drag the saw up and down to cut the wood
level 15: Tap the square, it will turn into a diamond
level 16: Drag the penguin away, the egg is behind him
level 17: Drag the ! to behind the sentence, after “them”
level 18: Tilt the device upside down
level 19: Touch green, yellow, then red. After touching yellow, red will take the place of green
level 20: Remember the blob is facing right >_> (move the blob to discover secret #2 *thank you Stavros)
level 21: Tap all the red shurikens
level 22: Tilt the device up, so that the cloud will rain into the bucket
level 23: Touch the targets
level 24: Don’t press the GO button, just wait
level 25: Tap the balloons in this order: Bottom left, bottom right, the one next to the bottom right, middle, top (click for crappy picture)
level 26: Quickly tap the S magnet, otherwise you lose 1 life
level 27: Drag the chips into their respective number slots
level 28: Tap the green, orange, red, then blue circles (not words)
level 29: Tap the bottom right fish
level 30: Shake the device to break the ice
level 31: Keep tapping the enemy
level 32: Tap 25 twice, 5 once, then 10 twice
level 33: Tap the top right image
level 34: Tap the targets in order: 5, 4, 3, 2, 1
level 35: Tap the 5th ring from the top (the side of the background are rings)
level 36: The light went on/off 11 times (move the light bulb for the secret #3 *Thank you gable)
level 37: Tap the yellow, red and blue balloons
level 38: Use 4 fingers to tap all 4 candles simultaneously
level 39: Drag away the words “the electric coil”, then tap continue
level 40: Tap the green light
level 41: Tap the word “to”. Remember the meteor has 6 craters.
level 42: Drag the white bulb out, drag the bottom yellow bulb in
level 43: Tap continue (it’s not the end yet)
level 44: Tap the X
level 45: Drag the UFO to the 2nd last person (from the left) , then beam him up
level 46: Drag the bottom key to the lock
level 47: Tap the heart image, the words “clubs” then “diamonds” then the spades image
level 48: Tap talk, wait for the black screen to appear
level 49: then tap the edge of the screen near the home button on your device
level 50: Kill the enemy by shaking your device
level 51: Tap the ice cube
level 52: Tap the image on the left, the robot
level 53: Press the Continue button
level 54: Tilt the device to the right
level 55: Enter the pincode 220
level 56: Drag the green alien, drag the purple alien, drag the words, tap continue
level 57: Tap anywhere on the tv (this is where you will find the hidden easter egg if you reach the level at 2:00AM, it goes according to the time set on your ipod. If you do reach the level at the correct time, the TV will look different and you will get the points)
level 58: Keep tapping the weight until you can see the continue button, then tap it
level 59: Type the word bananas
level 60: Do a complete rotation of the device.
level 61:  Tap the whole pizza 5 times.
level 62:  Wait for the Stop sign to become the Go! sign then tap it
level 63:  Tap the colors of the rainbow in order: red, orange, yellow, green, blue, indigo, violet
level 64:  The moon had 6 craters.
level 65: Don’t be deceived, you didn’t fail. Tap the word continue at the top right.
level 66: Drag the left cherry away then tap the right cherry.
level 67: Drag the envelope into the right side of the box, and the e from e-mail (in the question) into the left side
level 68: Bottom bun, patty, ketchup, lettuce, tomato, top bun
level 69: hold the ball still in the middle segment for 5 seconds (this is up to your own skill)
level 70: Drag the letters “ork” away from the spork in the question, then tap the spoon (word), and then the fork (picture)
level 71: tap the blue lollipop, then pink lollipop (extreme left), then purple lollipop (extreme right), hen red lollipop
level 72: drag away the battery compartment cover and then the battery
level 73: wind up the camera (like a disposable) by sliding your finger on what would be the spin dial then then shoot a picture by tapping the shoot button when the light turns green
level 74: shake the device to develop the photo
level 75: tap the word defend and a shield will appear, slide it to block the sword

Secret #1 move the bottom left cloud to discover secret in level 5
Secret #2 move the blob to discover secret in level 20
Secret #3 move the light bulb for the secret in level 36

Updated to the latest version on 26/9/2010.

How to get the easter egg:

Get to the television level at 2:00 (according to the time set on your device)

Easter egg answers:

For the first part, wait until 200 seconds have passed (after W.. A.. I..T have all come out), then immediately tap anywhere.
For the second part, it asks “what are you?”, the answer is “other”.