All the tube news that’s fit to surf …

– An early reviewer of the MacGruber movie, based on the Saturday Night Live skit, says the flick is the best SNL-inspired movie since Wayne’s World. Party on, Garth, indeed.

– History Channel is launching its first reality competition series, Top Shot, in 2010, and in keeping with the network’s theme, the show will feature shooting contests, using various weaponry from the past.

– Musician-turned-horror filmmaker Rob Zombie may be directing an episode of CSI.

– The whole blackmail scandal involving pics of Full House and ER star John Stamos? The pics allegedly were just him posing with fans … hmmm, those were some pretty lame blackmailers, no?

– Showtime is launching a weekly news show about racing, called Inside NASCAR. The series premieres in February.

– TNT has greenlit a second season of the Dylan McDermott cop drama Dark Blue.

– Advertisers are pulling their commercials and one ethnic group is calling for a boycott, but it’s hard to believe anyone’s in such a tizzy about MTV’s new reality series Jersey Shore that they’d make death threats to people at the network.

– Four seasons in, and Dexter just earned the best ratings in the show’s history for last Sunday’s penultimate season four ep. The much-anticipated season finale airs Dec. 13 (9PM ET) on Showtime.

– TLC is airing a Cake Boss marathon on Dec. 28, and viewers get to pick the eps that will air. Vote here.

– And tonight on a very busy primetime schedule: Brick is having a hard time getting into the Christmas spirit on The Middle (8:30PM, ABC); It’s the Glee fall finale (9PM, Fox), the last ep of the show ’til April(!); A scene from Speed is tested on MythBusters (9PM, Discovery); Jay wigs about Gloria and Manny’s Christmas plans on Modern Family (9PM, ABC); Felicity and The Unit cutie Scott Foley guest stars on Cougar Town (9:30PM, ABC); Babs Walters unveils her list of the Most Fascinating People of 2009 (10PM, ABC); Top Chef names a season six winner (10PM, Bravo); Christian finds himself deeply in debt on Nip/Tuck (10PM, FX); Adam tries to scarf down five huge sandwiches in five minutes on Man vs. Food (10PM, Travel); Steven Seagal: Lawman is back on the case on A&E (10PM); Guy Fieri guests on Dinner: Impossible (10PM, Food Network); Spectacle: Elvis Costello With … debuts season two as Elvis chats with Bono and The Edge (10PM, Sundance); Which team will win the Real World/Road Rules Challenge (10PM, MTV)?; and G4 premieres Campus PD (11PM), a reality series that follows the unique (read: lots o’ sloppy drunk students) challenges of being a college campus cop.