Depends on what kinda era you're really into.
However, you can't beat a bit of:
Charlie Parker (Alto Sax)
John Coltrane (Tenor Sax)
Sonny Rollins (Tenor Sax)
Bill Evans (Piano)
Benny Goodman (Clarinet)
Freddie Hubbard (Trumpet)
Miles Davis (Trumpet, seriously recommend as his style underwent VERY distinct changes through his life)
I'm sure people have already mentioned these but hey.
Some newer guys:
Uri Caine (Piano)
Brad Meldhau (Piano)
Skerik's Syncopated Taint Septet (Awesome)
Terence Blanchard (Trumpet)
Arrghh there's so much, I would end up going forever if I kept putting the ones that came into my head.
Pretty much everyone I've put is, or has played, pretty straight-ahead bop jazz I realise, and there's lots more players out there of various styles but that would take far too much effort. Hope it helped.