Born to be wild by Steppenwolf
Freebird by Lynard Skynard-obviously
Who do you want for your love by Budgie.
Whiskey in the Jar by Thin Lizzy-the metallica version was shite on toast.
Dr Dr by UFO
Black Betty by Ram Jam
Black night by Deep Purple
Castles made of sand by Jimi Hendrix
White room, Spoonful, Tales of brave Ulysses and Sunshine of my love by Cream
Let there be rock by ACDC
Also, not really classic rock as its from the 90s, but it is in the classic rock vein--Get away by Ocean Colour Scene (Get away, not get blown away) uber drum solo and buildup at the end, if you have never heard it give it a listen, blatantly ripping off Tales of Brave Ulysses and Dear Prudence, but it is awesome, I couldnt tell you how many times I acted out that drum solo as a teenager.. In fact give the whole album Moseley Shoals a listen, not a bad track on it.
Clowns to the left of me, jokers to the right, and none of these people are very funny.