it's not possible! there are SO many, in SO many different styles, but here are some sweet ones that i haven't seen listed (just to be different):

Jason Becker - Perpetual Burn

Steve Vai - Answers (G3 version with crazyass tapping solo at the end)

Jimmy Page - Bron-Yr-Aur and Fool In The Rain are sweet

Kenny Wayne Shepherd - Blue On Black

Trey Anastasio - Landlady (the interlude part of "Punch You In The Eye", Phish rarely plays this alone anymore, but listen to PYITE, it's a pretty sweetsounding guitar piece)

Brian May - Bohemian Rhapsody, Killer Queen, Hammer to Fall... all his solos rock

Richie Sambora (Bon Jovi) - "Bed of Roses" = short but sweet solo, great fretwork throughout the song...
there are SOOO many other cool ones but this is more than enough for one post. PEACE