Attention Deficit Creator Disorder: Mike Portnoy, with side-projects such as Liquid Tension Experiment, OSI, and Trans Atlantic, and even moreso after he left the band. Also Jordan Rudess in 2013, who is working on no less than four musical projects note Dream Theater, Explorations for Keyboard and Orchestra, All That Is Now, and Levin Minneman Rudess, as well as guest work for Eyal Amir and Ayreon and continuing to develop and promote various apps note Ear Wizard, the Explores app, Jam Bandit and technologiesnote Roli Seaboard, Ableton Push, Touch Keys.
Audience Participation Song: James will often get the crowd into singing along with the band, but that's nothing compared to Portnoy's Audience Participation Drum Solos, complete with call-and-response "Shave and a Haircut".
Creative Differences: One of the reasons Kevin Moore left the band after Awake (the others being his increasing alienation from bandmates and Reclusive Artist behaviour), and the main reason Dominici left after When Dream and Day Unite. (The band did not have major issues with Dominici but felt his vocals did not fit their style particularly well - Portnoy called the result "like having Billy Joel singing in Queensr˙che -, and he amicably left the band after the album was recorded.)
Many songs came from Mike Portnoy's problems while writing the lyrics.
The "Twelve-step Suite" is a series of five songs in twelve parts written by him, which chronicles his experience with alcoholism; also known as the "Alcoholics Anonymous suite". "The Mirror" is also about alcohol, written well before he became sober.
"The Best of Times", from Black Clouds & Silver Linings and "A Change of Seasons", from A Change Of Seasons were written about his late father and mother, respectively.
In a magazine interview, John Petrucci said he thought the Psycho Exercises Gag Dub videos were hilarious. On the extra material of the Chaos in Motion tour DVD, he imitated them.
There was also a show in Perth, Australia that had to be moved to a new venue, among other complications, so a fan created a parody of The Fall. Portnoy saw it, thought it was hilarious and proceeded to have it played before the first song at the show.
Falling into Infinity was supposed to be a double album, but the record label wanted it to be less proggy and more radio-friendly. Also, a shorter version of the song "Metropolis Part 2", before it was turned into an album, was going to appear in the second disc.
Petrucci felt that Metropolis Pt. 2 needed a "heavier and larger" mix and called in Kevin Shirley was to remix it, but due to time constraints, Bottrill's original mixes of "Regression", "The Dance of Eternity", "One Last Time" and "Finally Free" were left on the album.