It's called semi-charmed life by Third Eye Blind :)
I think the song is Mah Na Mah Na
I love you by Hannah Montana
Howlin for you by the black keys
Justin Berfield goes by The Commercial Kid.
Cat Stevens wrote the song. Cat Powers sings the song in the commercial.
It goes for 5126 years and then it repeats
I don't know who she is, but I think that she plays Penelope in the Radio Shack commercial where the guy turns his records into .mp3's.
The constant Pi has no end. It is a number that goes on forever and never repeats!
continuous? continues, drawn out, proceeds, is placed upon (a hat goes on a head), repeats, talks excessively
Landon Pigg - Coffee Shop
i think its I'm yours by Jason mraz
It goes "C, D, E, F, G, A, B" and repeats
Landon Pigg "Coffee Shop"
"not in love" by crystal castle, thats the one from the last episode i think
It goes 1.3 ... where the 3 repeats without end.
it soaks into the soil or goes evaporates and repeats the water cycle.
He repeats it to make clear that the journey goes on for a long time, on and on.