Powerblock is a lineup of how-to automotive shows. There is no longer any TV airings of PowerBlock, which has been transformed into PowerNation. The current host of the PowerNation is Katie Osborne. Previous hosts of PowerBlock were Courtney Hansen, IRL driver Danica Patrick and entertainer/model Michelle Spaziano. Shows in the block are rated TV-G, which made it Spike TV's first programs with a TV-G rating.