there are tons of great riRAB. Almost any song by zeppelin has a great riff in it (whole lotta love, kashmir, ten years gone, in my time of dying, over the hills and far away, bring it on home, etc.).
Heres a little list ive put together of some great riRAB:
-sunshine of your love - cream
-Johnny B Goode - chuck berry
-back in black - ac/dc
-voodoo child - hendrix
-purple haze - "
-hey joe - "
-sweet home alabama - skynard
-aqualung - jethro tull
-outshined - soundgarden
-walk this way - aerosmith
-money for nothin - dire straits
-frankenstein - edgar winter
-brown sugar - the stones
-dont fear the reaper - blue oyster cult
-pinball wizard - the who
-up around the bend - creedence
-under the bridge - chili peppers
-Aenima - tool
-You shook me all night long - ac/dc
-rockin in the free world - neil young
-love me two times - the doors
-barracuda - heart
-limelight - rush
-come as you are - nirvana
-spoonman -soundgarden
-rock you like a hurricane - scorpions
-man in the box - alice in chains
those are about all that i can think of right now although im sure there are many other great riRAB out there. I think that all in all Jimmy page was the master at coming up with some of the most awesome riRAB of all time.