YouTube sensation turned recording artist and TV star Greyson Chance visited 'Good Day LA' (weekdays 9AM PT on Fox) to talk about what might be next in the 14-year-old's ridiculously busy career. It was just last April when Greyson posted his performance of Lady Gaga's 'Paparazzi' onto the Web; since then he's been on 'Ellen,' recorded an album and was cast as young Jimmy on 'Raising Hope.' His character Jimmy was incredibly talented as a child, but as Chance explained it, "Then I get hit by a golf club ... and that changes everything."

Dorothy Lucey asked Chance about rumors that he might be making an appearance on 'Glee,' but he shot them down with a smile. "Please, spread them," he joked. "I would love to be on 'Glee.'"

While some shows have lured famous movie stars into leading roles, other shows are taking a more temporary approach this fall with big-name guest stars booked for short-term stints on the small screen.

Fall TV will host several major reunions that you definitely won't want to miss. Terry O'Quinn will head back to the island for a stint alongside former 'Lost' costar Daniel Dae Kim on 'Hawaii Five-0,' while Ray and Debra are back together (sort of) when Ray Romano stops by 'The Middle' to visit his former 'Everybody Loves Raymond' costar Patricia Heaton. And let's not forget 'Buffy the Vampire Slayer' alums Charisma Carpenter and James Marsters playing a married couple on an episode of 'Supernatural' this season.

Wanna know who else is heading to TV this fall? Check out some more of the biggest and best guest stars, including 'The Wire' alum Michael K. Williams (Omar!), Oscar-nominated actress Patricia Clarkson and crooner Josh Groban in AOL TV's fall guest star gallery.

Today Greyson Chance, the YouTube star who gained fame for his rendition of Lady Gaga's 'Paparazzi,' debuted his new single 'Waiting Outside the Lines' on 'The Ellen.DeGeneres Show' (weekdays, syndicated).

An immaculately stylish Chance sings, in that way-too-mature-for-a-13-year-old voice, "You'll never enjoy your life / Livin' inside the box / You're so afraid of taking chances / How you gonna reach the top?" The singer busts away from the piano for some pure vocal performance near the clip's end.

Greyson Chance, the 13-year-old whose cover of Lady Gaga's 'Paparazzi' made him a YouTube sensation, appeared on 'The Ellen DeGeneres Show' (weekdays, syndicated) and explained how bullying inspired his new song 'Purple Sky.'

Ellen may have left 'American Idol,' but that doesn't mean she's no longer involved in the world of music. sHE's formed a new record label called "eleveneleven." The first singer that she signed to her label was Internet sensation Greyson Chance, who gained fame for his YouTube version of the Lady Gaga song 'Paparazzi.' The 13-year-old Greyson has already turned into a fairly big deal. Today, Ellen unveiled her next act.

On 'The Ellen DeGeneres Show' (weekdays, syndicated), Ellen showed off 16-year-old Tom Andrews, who has come all the way from the United Kingdom. Like Chance, Andrews was also discovered on YouTube. DeGeneres called him up randomly at home and now ... here he is, in America!