It's not the first time The Boss has wandered onto the stage when The Gaslight Anthem have been performing a show and this weekend history repeated itself when Bruce made an appearance during their set in NJ at the Convention Hall in Asbury Park. The fan shot footage, via YouTube user Littledevil05, can be seen and enjoyed at the top of the page. Bruce and The E Street Band also just announced a huge world tour including spots at The Isle of Wight Festival and London's Hard Rock Calling. Full dates can be seen over on Bruce's official website.
Before you get all hot under the collar about that though, peep the awesome footage at the top of Gaslight and The Boss performing "American Slang" and for comparisons sake why not go watch Bruce join the band on stage back in '09 for a performance of "The '59 Sound". Both will probably make the hairs on the back of your neck stand up.