This may inspire me to put together my own list of must see tours. For now I will leave you with Spin's must see summer tours.
1) MGMT
2) Paramore who is apparently traveling with Tegan and Sara (Estrogen fest.. I fucking love it!)
3) Arcade Fire (Meh, don't get me wrong i like their music, but trippy bands like them just tend to disappoint live. Personal opinion, take it or leave it. Or tell me I'm wrong that you saw them and they were AWESOME. I'd like to hear that.)
4) Slayer (Wow, really Spin? I'm impressed)
5) Vampire Weekend (See that? Tin the Park? I swear on this blog I will be at T in the park next year. Who's coming?)
8) Erykah Badu (I'm so not gonna lie, I have no idea who the hell this is. None.)
10) The National
11) Hole (Yes!)
12) Phish
13) Lady Gaga
14) Hold Steady
15) Modest Mouse (Always and forever.)
16) Rihanna
17) Jack Johnson
18) The Dead Weather
20) Kele
21) Aerosmith (Yeeah..)
22) Green Day
24) Rock the Bells (Lazy Asshole's, Rock the Bells is not a band to see. They just snuck in like 100 bands on one number. This was not a list of festivals to see.
25) Ozzfest(Again?)
Just some ideas to get you started.