Originally Posted by: shemp59a fun one is led zeppelin's "friends"....i think it's in open f

True and false...it is fun, but it's in open C: CGCGCE
Another one of theirs in that tuning I know of is "Hats Off To Roy Harper", a blues slide track. This is prolly one of my favorite tunings too. Actually I usually flat the high E to make it an open Cminor tuning. Dropping it again to D is kinda cool too. I'd just be wary of trying to tune too many strings above their standard...extra stress on the neck (not to mention the strings).