My musical tastes are large and varied--some would even say indiscriminate *g*--but there are specific albums and groups/solo acts that fill my own 'desert island' scenario:

Pink Floyd - Wish You Were Here
Nirvana - Nevermind
Stevie Ray Vaughan - In Step AND Couldn't Stand the Weather -- pick one
Rusted Root - When I Woke
Tom Waits - Bone Machine

*cough* These are all available for, umm, err, uhh,... yeah. Just let me know.