After months of searching, it looks like Serena has finally found her father. Sources say that actor William Baldwin has joined the cast of 'Gossip Girl' as William van der Woodsen, Serena's elusive dad who has been M.I.A. for the show's entire duration. Baldwin's gig will reportedly last for three episodes and will kick off sometime in April. Now that's something to gossip about. [Ausiello Files]After months of searching, it looks like Serena has finally found her father. Sources say that actor William Baldwin has joined the cast of 'Gossip Girl' as William van der Woodsen, Serena's elusive dad who has been M.I.A. for the show's entire duration. Baldwin's gig will reportedly last for three episodes and will kick off sometime in April. Now that's something to gossip about. [Ausiello Files]

More stars are lining up to appear in George Clooney's 'Hope for Haiti' telethon. Among the famous faces you'll see: Taylor Swift, Jennifer Hudson, Stevie Wonder, Sheryl Crow, Jay-Z, Rihanna, Shakira and Coldplay. The telethon airs Friday at 8PM across multiple networks. [PopEater]

It's a bird, it's a plane -- nope, it's just actress Annette O'Toole, who will reportedly return to 'Smallville' for a special guest arc. In it, O'Toole will reprise the role of Martha Kent, Clark's mother. The role is poised to air during May sweeps and will mark her first appearance on the show since season 6. [Ausiello Files]

One week from Sunday, the 52nd annual Grammy Awards will play tribute to the late Michael Jackson, which will include special appearances by Celine Dion, Jennifer Hudson, Smokey Robinson, Carrie Underwood and Usher, as well as the unveiling of the 3D movie 'Earth Song.' Fans who want to take part in the mini-3D event can pick up free glasses at Target stores nationwide, beginning Sun., Jan. 24. [EW.com]