I would say in fact that I do: Miles Davis Quintet, "If I Were a Bell" from Relaxin'-- it just doesn't get any better than that. Everything about it is perfect to me: Miles' blend of the sweet and the cool; a great simple arrangement; superb backing from PJJ and (especially) Mr. PC; great solos from Miles, Red and Coltrane (maybe the most melodic solo he ever laid down...someone-- I think it was Jack Chambers-- said that the solo was unexceptional and that Trane didn't do enough, but I think it's exactly what the song calls for, he sticks with the melody and just works on it a minute). Everything I love about jazz in under 10 minutes.
What about you?