- 2009: Created and executive produced "Dollhouse" (FOX) starring Eliza Dushku; also wrote several episodes and directed the pilot
- 2007: Launched a free webcomic, Sugarshock! on Dark Horse comic's Myspace page
- 2005: Helmed "Serenity," the feature-length adaptation of his TV show "Firefly"
- 2005: Released a series of online shorts titled the "R. Tam sessions," starring himself and Summer Glau
- 2002: Created and executive produced "Firefly" (FOX); also wrote and directed the pilot
- 2001: Credited co-writer for the Disney animated feature "Atlantis: The Lost Empire"
- 1999: Executive produced and co-created the spin-off series "Angel" (The WB)
- 1998: Formed the production company Mutant Enemy, Inc. and signed with 20th Century Fox
- 1997: Created and executive produced "Buffy the Vampire Slayer" (WB, 1997-2001; UPN, 2001-2003), based on his screenplay; penned many episodes including the Emmy-nominated episode "Hush" (2000); made directorial debut with "Prophecy Girl" (1997)
- 1996: Reportedly did uncredited rewrites for "Twister"
- 1995: Received an Oscar nomination for his significant rewrite on "Toy Story"
- 1994: Did uncredited rewrite work on the blockbuster hit "Speed"
- 1992: Made feature screenplay debut with "Buffy the Vampire Slayer"
- 1990: Co-produced the short-lived NBC series, "Parenthood"
- 1989: Served as story editor and writer for the ABC series, "Roseanne"
- Moved to Los Angeles after college
- Reportedly did uncredited rewrites of "The X-Men" and "Titan A.E." (released in 2000)
- Wrote several spec scripts for various series' before selling his first to "Rosanne" (ABC)




