Too many to list really. Notable bands? Bands that you folk might be familiar with? Hrm. Saw Siouxsie Sioux in NY a couple of years ago, really cool show. Debbie Harry was in the audience. Played a show with Zoe Bonham (John Bonham from Led Zepplen's daughter), she dj'd again in NYC. Saw Joe Strummer perform with his Mescaleros awhile back. The Yeah Yeah Yeahs put on one of the best live shows I know of, so do the Hives. Almost forgot one slightly more notable one, saw Tom Morello from Rage Against The Machine outside my apt a year or two ago. The street I live on (Lark St) has this Lark Fest thing every year, big deal, street filled with people beer and bands. The main stage was built right below our Apt, me my roommates and the fuckton of people we invited hung out on the roof enjoying the music till the police kicked us off. Never liked Rage, never liked the whole Rap-metal thing, but Tom Morello did some cool folk protest classic type shit.
Other than that drawing a blank. Lots and lots of small shows with obscure bands throughout the years.