Ether (still use at least one line from this song in conversation a day. Classic just off of fukkery and ad-libs alone)
2nd Childhood (great concept, all points in the song still valid. And to this day I still get the beat stuck in my head from time to time. That bassline
)
The Flyest (tough choice because I'll readily admit there are songs that are better on the album, but I've played this song more than the others)
Other songs that could easily take the 3 spot.
Rewind
One Mic (even the bootleg version brehs had with the dogs barking on it was piff
)
Destroy and Rebuild (shyt is straight jokes. "Wh-Why you never bucking?" "All of a sudden you the motherfukking Nino Brown of the fukking hood!?")