The Solo in Bulls On Parade is the tip of the iceberg. Have you heard any Rage song besides that one?
Every Rage song only features drums, bass, guitar, and vocals. Knowing that, the sounds he makes that guitar make are pretty amazing.
From Rage Against The Machine:
Killing In The Name (3:50), Take The Power Back (2:42), Settle For Nothing (2:48), Bullet In The Head (1:17), Know Your Enemy (3:15), Wake Up (2:55), Fistful Of Steel (3:21), Township Rebellion (2:05), Freedom (2:08)
From Evil Empire:
Down Rodeo (2:23) , Without A Face (2:20), Wind Below (2:47)
From Battle Of Los Angeles:
Guerilla Radio (2:28) (yes, that's his guitar, not a harmonica), Mic Check (2:09), Sleep Now In The Fire (2:46), Born As Ghosts (2:08), Maria (2:54),
From Renegades:
Pistol Grip Pump (2:15), Kick Out The Jams (1:40), Down On The Street (1:50)
I don't have many Audioslave songs, but just judging from their singles, he's quite impressive. Like A Stone (2:58), Doesn't Remind Me (2:51), Original Fire (2:27).
Here's a video someone compiled with some clips.