I attended a week long rock concert at ally pally - London 1973. The climax of the gig was Friday night Black Sabbath
which was jam packed with among others a large number of German/Japanese tourists. The support band for the night was Stackridge whose performance was surreal/outstanding. Their main song was "do the stanley" which appeared to be a take of "the Lambeth walk". They took the audience so high they were still coming down when Ozzy started his stuff and it was hard work to hold the audience - bet Stackridge never supported 'em again

Best I ever saw - Bad Manners' support at Manchester Uni in about 1990. They had the then unknown (on this side of the water) Bim Skala Bim who promptly blew them off stage.
More recently I saw DC Fontana support The Lambrettas, and were better by a large degree.

I went to see Shed 7 at Hull uni in 98 , I didn't know Puressence were supporting but they were were f**king amazing and loved them ever since.
Worst was Carter usm at Manchester supporting Madness.

I saw Carter supporting Madness too.

Bet the bar did well at that point.

Saw The Cribs support Kaiser Chiefs many a time and they were ace in those days!

Worst, oh man! Always hated Maximo Park live as the lead singer was irritating (and my ex at the time loved him)

Best support bands
The Subways supporting Razorlight
The Cribs supporting Kaiser Chiefs and vice versa
Kasabian supporting Oasis
The Black Angels supporting BRMC
Rodrigo y Gabriela supporting Muse
Art Brut supporting Maximo Park (only reason I went to that gig was to see Art Brut)
Mind has gone blank for bad support as I try and forget them, I will have to look back through ticket stubs to remind me.

Aye , Most of the bottles ended up on stage !

Saw Shed 7 at the NYNEX Arena (M.E.N) in 97, they where supporting Aerosmith on their Nine Lives Tour, on this particular occasion they actually blowed Aerosmith of the stage IMO

one of the best : The Verve supporting my own band in 1990 lol.
one of the worst : Too many to mention lol

Tenacito, before the verve got signed.

Not really a support act but caught Swedish band Kent first on on the mainstage at Leeds 2000, they were pretty amazing and almost noone was there.
Worst... hmm, probably one of the multitude of Oasis/Manc influenced clones that seem to swagger in the pubs of most towns at some point or other.

From the very minimal gigs I've been to;

Worst - Brian Kennedy (Went to the Clannad gig as my mate had a spare ticket, and sadly I was sat next to a middle aged woman who spent the whole time with the shouting and singing and stood up)

Best - I Am Kloot (This must have been in their very early years, when they were supporting The Webb Brothers, I have liked them ever since)

Worst: I saw Andrew Sachs grandaughter and her friends perform a burlesque act before a My Vitriol gig


Fair play Russell Brand....

Off the top of my head , Suicide ,Specials and the Slits all supporting the Clash at different gigs.
One of the worst, Joy Division supporting John Cooper Clarke