Aeroplane by the Red Hot Chili Peppers...thumping slap verse...full neck chorus...first position bass solo. I love playing that one.
I learned that song in high school and performed it live with the school band (my first "gig" and tons of fun). In the years since then I sort of forgot about it. Every so often I get asked to play it or show someone how to play it...and by "play it", I mean play the slap/pop verse. It's become a staple among learning bassists, I guess because it really is a fairly simple, straightforward, octave-based slap line that sounds freakin' awesome.
But the point is that I had forgotten about the rest of the song. After reading your post, I flashed back to being 17 years old and playing it in front of all the students, faculty and families from my high school. I went to my room, threw One Hot Minute in the stereo and rocked out to it again for the first time in about 7 years. So....thanks for the memories dude! That is indeed one EXTREMELY fun song to play.
And to contribute something new to the thread, here are some favorites of mine:
Jaco Pastorius: The Chicken
Chili Peppers: Show Me Your Soul -- It's a lesser-known song from their early days, but it absolutely OOZES funk. Check it out here, classic RHCP music video