As far as individuals under the best category (i'll only do americans):
Ryan Hall
Ritz
Galen Rupp
Andy Wheating
German Fernandez
Luke Puskedra
Chris Derrick
Finnerty
That junior in hs (now senior) Greer from oregon that ran like 1:47
Evan Jager-great freshman year, now can focus on individual development under Nike
BTW, i realized as I was going through this list my intent was more towards who I'm excited about in 09 than success in 08.