That seems fair. Unless the band has really worked the crowd up, which then you might get mosh pits and crowd surfing. I saw Haken last night, and it was as you said, bunch of people standing around (granted the venue was an old movie theater, so it's not like you could move around much with the seats in the way). Meshuggah a couple years back was pretty similar.

Bands like GWAR never disappoint, though. Some bands back in the day which were like that as well: Pantera, System of a Down, Metallica (pre-black album). In Flames recently had a decent mosh pit going on when I saw them.