Mike Portnoy has been a busy guy since he left Dream Theater a few years ago. He's recorded and released albums with Neal Morse, Flying Colors, Adrenaline Mob; he's done tours for all of these bands, as well as touring with Billy Sheehan, Derek Sherinian and Tony MacAlpine; put out DVDs with them; and worked with John Sykes on an album that may never even get finished.
Earlier this year, these four amazing musicians got together and did a show for a drum showoff thing, and they filmed it for a DVD. They've recently gotten back together for a tour in Europe where they're playing some of the most amazing stuff for people.