ABC's 'Happy Endings' casts comedian TJ Miller to guest star; 'Glee' extends London stay

abc-happy-endings-tj-miller-320.jpgJust when you thought your Friday couldn't get any better, here's some TV snacks.

We've exclusively learned that ABC's "Happy Endings" has brought on comedian and actor TJ Miller ("How To Train Your Dragon," "She's Out of My League"), pictured left, to guest star as an old friend of the gang, Shershow. He used to be a mess, but when they attend his wedding they find out that he has gotten his life together. The gang (which includes "24's" Eliza Cuthbert and Zachary Knighton) then start to question if their own lives are that "together." The midseason pilot has yet to get a premiere date. [ Zap2it Exclusive]

The recently announced "Glee" European tour is selling out quickly, so to satisfy as many British gleeks as possible, FOX announces an additional two shows will be played at 
glee-london-tour.jpg
London's O2 Arena on June 28 and 29, 2011. Still no word on a North American leg, but co-creator Ryan Murphy promises "some exciting news very soon" on that front. [ FOX]

It looks like the The CW is trying to find a suitable superhero substitute when "Smallville" ends and they may have found it in DC Comics' "Raven." The network is looking to adapt the comic about superheroine Raven, a half-demon (also known as Rachel Roth) "who has empath abilities to read emotions and divine secrets." She can also teleport herself, enter the minds of others and fights crime while trying to keep the dark elements within her under control. "V" co-exec VP Diego Gutierrez is writing the script and will serve as executive producer. [ Variety]

NBC is clearly not as committed to freshman drama "Chase" as it thought it was earlier in the season. After giving the Kelli Giddish-headlined series a full 22-episode order in October, the network has decided to knock that down to just 18 -- not promising news for fans of the low-rated series. [ THR]

Nielsen releases a study of how TV audiences are digesting 2010's new fall shows, and apparently they're most glued to the set when "Mike & Molly" is on. The CBS comedy topped the list of series with highest "viewer engagement" -- that is to say, paying attention. "Running Wilde," "Raising Hope" and "The Event" all share the three-way tie for second place. [ THR]

"Law and Order: Special Victims Unit" lands yet another guest star: Jeremy Irons. Yes, Oscar, Emmy, Golden Globe, SAG and Tony Award-winning actor Jeremy Irons. The actor will be playing sex therapist Dr. Cap Jackson, who runs a sex addiction rehab clinic. "Were elated to work with an actor of Jeremy's caliber," says Executive Producer Neal Baer. "He brings depth, intelligence and charisma to all his varied roles and we couldn't be luckier to have him." Irons episode is titled "Mask" and will air in 2011. [NBC]

HBO has a found a chief of staff for Julia Louis-Dreyfus' vice president in their "Veep" pilot -- it's Vada from "My Girl!" Anna Chlumsky scored the co-starring role of Amy in the high-profile project. She's most recently appeared in two episodes of "Covert Affairs." [ Deadline]

ABC News has finally tapped a new president. The network announces that former "Good Morning America" executive producer Ben Sherwood will replace outgoing David Westin. A journalist, entrepreneur and novelist, NYMag points out Sherwood is responsible for the book Zac Efron's "Charlie St. Cloud" is based on. Huh. [ ABC News]
Photo/Video credit: FOX