Song Suggestion help for a video for my sisters graduation?

[jadelyntate]

So, my baby sister is graduating from High School in about three weeks (OMG!) and I've decided to make a picture slide-show of the munchkin using any and ALL pictures I can find (including ALL the ones of her looking dorky--:D). Anyway, I'm getting the pictures easily enough but I'm now trying to find songs to use. I don't just want the one song, I'm gonna WMM several into a medely of sorts. I already have one song chosen, that's gonna contain pictures of her and me (Pinky and the Brain, if you were wondering ;)) but I'm looking for suggestions for other songs. Funny, emotional, upbeat, slow, it doesn't matter as long as it kinda fits with graduation/growing up/sisterly bond.

If you do have suggestions, links to song downloads would also be highly appreciated.

Thanks!