best concert for me must be Thunder at Hammersmith Odeon.
Thunder aren't top of my "best band" list, but the did one hell of a concert. David Coverdale came by and did a song (he brought Tawny with him which made it even better!) And then Rick Allen came on to do a solo... drinks with the band afterward too
Saw an amazing set by richi sambora at wembly - not a good venue, too big for a decent atmosphere, but an unbelievable guitar solo.
Now just waiting for Floyd to do a come-back tour!!