No, the lead singer for the rock band Jackyl, and star of the reality series Full Throttle Saloon on TruTV, Jesse James Dupree, is not the man that married Sandra Bullock.
Jesse James (born Jesse Gregory James on April 19, 1969 in Lynwood, California) married Bullock (born Sandra Annette Bullock on July 26, 1964 in Arlington, Virginia) on July 16, 2005; they were divorced on June 28, 2010.
James has been in 26 titles as himself, including Modern Marvels (1999), Punk'd (2003), American Biker (2005), Monster Garage (2003-2007), The Apprentice (2009), and most recently Jesse James: Outlaw Garage (2012).
Dupree has only appeared on That Metal Show (2011), and of course Full Throttle Saloon (2009-2013). TruTV's Full Throttle Saloon recently premiered its 4th season, and new episodes can be seen every Wednesday night at 9:00pm.