The Ramones (post Joey sadly)
Nine Inch Nails with David Bowie
Van Halen (with Sammy Hagar)
Lilith Fair (2 or three times), where I saw various artists including Tracy Chapman, Sarah MacLachlan, Paula Cole, Indigo Girls, Shawn Colvin, Lisa Loeb, India.Arie, Natalie Merchant, and many more. Look it up in Wikipedia if you want a complete list.
104 Fest (I think in 1998 and 1999, but I’m not sure. Possibly more than that.) – a music festival hosted by a local radio station. I saw Smashing Pumpkins perform the best, most ridiculous rendition of “Oops I did it again” by Brittney Spears ever. I also saw Aimee Mann, who I’ve loved since her ‘Til Tuesday days. Also Barenaked Ladies, The Mighty, Mighty Bosstones, and Live, among others.
Panic at the Disco
I think that’s it, but honestly I can’t be sure.