"Drake & Josh: Really Big Shrimp," a Nickelodeon TV movie starring the hit TEENick series headliners Drake Bell and Josh Peck, serves up jumbo laughs and Drake's musical licks, in the super-sized comedy premiering Friday, August 3 (8-9 p.m. ET/PT).

But when Josh botches the record deal he sealed for his wannabe rock star stepbrother Drake, will it rock their friendship? Two-time Kids Choice Award winner Bell (2006 & '07) wears two hats, taking turns behind the camera with Drake & Josh director Steve Hoefer, to make his directorial debut.

In addition, on Saturday, August 4, an eight-hour Drake vs. Josh marathon (noon-8 p.m. ET/PT) hosted by Miranda Cosgrove -- who'll segue from playing Drake and Josh's mischievous little sister Megan to her own TEENick series, iCarly, in September -- will be capped by an encore of "Drake & Josh: Really Big Shrimp" at 8 p.m. and a sneak peek of iCarly at 9 p.m. Shrimpylympics will interlace the marathon of favorite episodes, and Miranda will keep score as Drake and Josh compete in events including Shrimpo Roman Wrestling, Shrimptona 500, Shrimp Regata and The Long Swim Home.