Anthony David Miles, Tom Shillue, Jimmy Fallon, Chris Tartaro

This week, Jimmy Fallon made his debut as host of The Tonight Show, and welcomed a host of celebrity guests — the most entertaining of which was Kristen Wiig, who did her entire interview in character as One Direction's Harry Styles. With NBC devoting its prime time programming to Olympics coverage, Parks and Recreation launched its online spin-off The Hapley Group, and Parenthood's companion web series incorporated the show's long-awaited crossover with Friday Night Lights. Also bowing this week were Marlon Wayans' new comedy channel, and Chipotle's original web series Farmed and Dangerous. Check out those clips and more in our weekly roundup of the best online videos:

Photos: The most stylish TV characters

Kristen Wiig on Jimmy Fallon: Leave it to Jimmy Fallon's former Saturday Night Live co-star Kristen Wiig to pull some shenanigans during his first week hosting The Tonight Show. Similar to the interview she did as Michael Jordan on Late Night with Jimmy Fallon last July, Wiig dresses up as One Direction member Harry Styles for her first interview on Fallon'sTonight Show — and completes the entire interview as Styles. (Her British accent and karaoke skills need a little work.)

Jimmy Fallon's barbershop quartet: Another highlight from Fallon's first week was his barbershop quartet, The Ragtime Gals, doing its own rendition of R. Kelly's "Ignition (Remix)." Check it out here:

Marlon Wayans' WhatTheFunny.com: Comedian Marlon Wayans has entered the online realm with his new comedy channel, WhatTheFunny.com. Many of the hilarious clips on the  site are NSFW, but here's a relatively tame one featuring Todrick Hall — "Twerkin' in the Rain." (via Tubefilter)

Parks and Recreation's spin-off The Hapley GroupEven though Parks and Recreation is on hiatus during the Winter Olympics, fans can still get a fix online. The sitcom launched a web-based companion series Thursday called The Hapley Group, in which Pawnee residents discuss the town's hot topics in a heated political debate moderated by newscaster Perd Hapley (Jay Jackson). Watch the first episode below:

Friday Night at the LuncheonetteParks and Rec isn't the only NBC series that's getting the digital treatment during the Sochi Games. ParenthoodGrimm and Chicago Fire are also keeping fans sated through companion series. And, as promised by creator Jason Katims,Parenthood's offshoot, Friday Night at the Luncheonette, features characters from his previous series Friday Night Lights. In this episode, FNL's Landry Clarke (Jesse Plemons) and Billy Riggins (Derek Phillips) stop by the Luncheonette, where Parenthood's Amber (Mae Whitman) is working after hours.

Game of Thrones' Kit Harington on Jimmy Kimmel LiveGame of Thrones may not be returning until April, but that didn't deter a couple of superfans from asking star Kit Harington some hard-hitting questions during a recent episode of Jimmy Kimmel Live.

Chipotle's Farmed and DangerousThe first episode of Chipotle's web series Farmed and Dangerous, starring Ray Wise, is now available on Hulu. The satirical series — whose goal is to highlight the dangers of factory farming — follows an activist named Chip, who fights a shady corporation called Animoil. (via Tubefilter)