John Oliver and Jon Stewart John Oliver and Jon Stewart

This week, Jon Stewart returned to The Daily Show, the stars of Scandal offered a sneak peek at Season 3, and a 96-year-old wrote a touching love letter to his recently-deceased wife. Also, Lil' Bub and his feline friends starred in a documentary, and Bill Hader offered Stefon fans hope that the Saturday Night Live character may get his own feature film. Check out those clips and more in our weekly roundup of the best online videos:

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Jon Stewart's Daily Show return: See how much Jon Stewart changed during his 12-week hiatus from hosting The Daily Show! Plus, check out his (disturbingly accurate) impression of Miley Cyrus.

Vampire Diaries bloopers: While you're eagerly awaiting the Season 5 premiere of The Vampire Diaries, let this Season 4 blooper reel tide you over.

Lil Bub and Friendz documentary: VICE has produced a documentary about the cutest cat celebrities spawned from the Internet, including Lil Bub, Grumpy Cat and some of their feline friends. Check out part 1 of 4. (via Tubefilter)

Scandal teasers: In this exclusive, Scandal stars Tony Goldwyn and Kerry Washington tease what happens when Olivia goes back to work (or "working it"?) at the White House.

Love Letter from 96-year-old Fred Stobaugh: In order to pay tribute to his recently-deceased wife of nearly 73 years, 96-year-old Fred Stobaugh decided to enter an online singer/songwriter competition — via a handwritten letter. The studio eventually turned his message into a song — and if you're not moved by "Oh Sweet Lorraine," you have no soul! (via Tubefilter)

Dinosaur prank: Just a typical day at the office? Workers in Japan played a cruel (yet hilarious) joke on one of their coworkers to submit to a prank TV show. It involves a large, very lifelike dinosaur costume.

Bill Hader teases a Stefon movie: Stefon may have bid a fond farewell to Saturday Night Live during Bill Hader's final episode last season, but could there be a movie featuring the character? Hader teased some potential plot lines during a recent interview with Larry King.

Game/ShowThe latest endeavor from PBS Digital Studios isGame/Show, which examines the video game characters that will be unearthed in the future to define our era. (via Tubefilter)