Tiv- was great. Went to many shows there during the early/mid 90's (Price of Silence anyone?). Also remember people diving off the balcony into the pit during the No Fun at All/Millencolin show there in 96. Priceless.
I like thebby, although the sound issues can sometimes give you the sh!ts. Also lucky I am a little taller than average otherwise you struggle to see from the back part of the floor.
HQ is a great viewing venue and the sound is great IMO.
Anyone ever see any shows at the Abbaddon? (Horace Pinker with the Blood Sucking Freaks!!)
Lennies used to have a good set-up, the stage elevation meant you could always see what is going on. Saw the final show for "The Sharp" there which was pretty good.
Fowlers I havent been impressed with too much- Sound is muddy and if you are trapped on the bar side you will not see too much. They do pull a pretty good number of quality shows I admit.
The Gov- only seen 1 show there but seems pretty good venue. Cant remember much.
Entertainment Centre. Only go there when I cant avoid it. Only good when it is full which generates a bit of atmosphere.
Enigma- as Wedgie says a great atmosphere, and the close proximity to the bands is good. Not great if you get trapped at the back, but if you are a fan you shouldnt be at the back anyway

Flinders Uni. The tavern is a little underrated, always thought the sound was pretty good. The refectory holds a lot of people but only half the people in there can see what is going on!
Adelaide UniBar. Probably not the greatest place to see bands but I am biased as I have seen many great shows there (Keeth, Force Fed Nine, Propagandhi, No Use for a Name just off the top of my head). Gets extremely hot inside even during the middle of winter.
Memorial Drive- I love it. Saw the Meanies w/ Pearl Jam there about 95, and Soundwave Festival in 2003. Both great.
Duncan Hall? @ Wayville- TERRIBLE sound. saw INXS there once and the tinny sound ruined my ears for about 2 weeks.
Old Lion- tried unsuccessfully to get into an 18+ Hoodoo Gurus gig when I was 17. My mates all >18 did the typical mate thing and left me outside for 2 1/2 hours. The sound was pretty good outside, so must have been pretty good inside.
Bridgeway- Saw Screaming Jets there a few years back and was a great show. Just wish I had worn my flanellette shirt so I'd fitted in with the locals a bit more...
Gawler Racecourse- Anyone who saw the Vans Warped festival there that day knows why nothing except horseracing is held there now.
Finally Ales and Sails- has a great band playing there in a week or 2 (Truth Be Sold). Plug over
