The music playing in the background, right after the opening credits, while Speed is photographing evidence is also the theme music for House MD.
James Hiroyuki Liao, who has a small role as a New York assistant M.E., later played an NYPD detective in Unforgettable (2011). That show featured Poppy Montgomery as Carrie Wells. Poppy Montgomery also starred in Without a Trace. Without a Trace did a crossover episode with the original CSI show.