In 1996, Cellini earned a CableACE Award for his work on CNN Sports Tonight, which he co-hosted with Van Earl Wright.
The first guest Cellini interviewed on that night was golfer Arnold Palmer, who, along with Joseph Gibbs, co-founded The Golf Channel in 1995.
In February 2005, Cellini, along with fellow Golf Channel colleague Stephanie Sparks, began hosting the network's reality television competition show, The Big Break, with their tenure as hosts beginning with the show's third season, The Big Break III: Ladies Only.
Cellini and Sparks returned to host again on February 7, 2006, for The Big Break V: Hawaii, a second "ladies only" edition.
Cellini serves as a full-time host for NBA TV's GameTime and a collection of online programs across Turner Sports' digital properties.