Tonight in HD: April 15

Glee's Matthew Morrison and guest star Gwyneth Paltrow

Friends (TV2, 6.30, R)

Ross and Rachel compete to spend time with their other friends, and when a lonely Ross is excluded from Rachel’s ski trip with her pals, he visits Carol.

Glee (TV3, 7.30, 5.1)

When free-spirited substitute teacher Holly Holliday fills in for the sex-education teacher, she and Will try to teach the kids the facts of life. Gwyneth Paltrow guest stars. What the critics say: Rolling Stone, Time.

Better With You (TV2, 8.00)

When Casey borrows a leather jacket that seems to bring the wearer bad luck, Ben recalls his unlucky experience with New York Yankee Nick Swisher (guest starring as himself).

The Graham Norton Show (TV3, 8.30, 5.1)

Guests include: Oscar nominee Stanley Tucci; joke merchant Jimmy Carr; Harry Potter star Miriam Margolyes; and multi-Grammy nominated Bruno Mars, who chats and performs Grenade.

Come Fly With Me (TV3, 10.00)

Flylo ground crew Taaj Manzoor bumps into Harry Potter actor Rupert Grint; Customs Officers Roberts and Stewart try to work out what to do with a truly massive drugs haul.

Smallville (TV2, 11.30)

In the wake of the VRA’s passage into law and the spread of the Omega Tattoo, civilians begin rioting against vigilantes, including Green Arrow. Meanwhile, Slade kidnaps Lois.

CSI: Crime Scene Investigation (TV3, 12.20, 5.1, R)

An undercover cop who infiltrated a ruthless motorcycle gang is murdered at a biker bar after his identity is discovered.

V (TV2, 12.30, R)

Season finale: Erica decides they need to make a statement about their opposition to the Vs; Father Jack makes his opposition to the Vs known; Chad Decker helps to expose a fifth columnist, only to realise Anna has been using him.