Acting Dennis DeYoung Acting Freaks and Geeks: The Documentary Self 2018 Dennis DeYoung and the Music of Styx - Live in Los Angeles Himself (Vocals / Keyboards) 2014 Styx - Caught In The Act Himself (Vocals / Keyboard) 2007 Styx - Return to Paradise Himself (Vocals / Keyboard) 1997 Other Credits Kilroy Was Here Story 1983 Agent-readable