Tonight in HD: July 29

The Vampire Diairies (TV2, 8.30)

Friends (TV2, 6.30, R)

Ross worries when his student girlfriend goes on vacation with her wild friends; Rachel needs a date for a ball; Joey’s refrigerator breaks down.

Shortland Street (TV2. 7.00)

Hunter tries to placate Evan; Jill’s good deed misfires; Callum resorts to desperate measures.

New Zealand’s Next Top Model (TV3, 7.30)

The girls race the clock in a ‘red carpet’ challenge, then undergo a photo shoot with one of NZ’s top comedians before enduring an elimination round that sees only seven head for an exciting destination.

Nothing Trivial (TV One, 8.30, R)

It’s game on as Michelle goes into battle with her ex for what she loves most; Mac takes on his nemesis; Emma breaks her losing streak. (Repeat of Wednesday’s episode.)

The Graham Norton Show (TV3, 8.30)

Guests include Ewan McGregor and The IT Crowd’s Chris O’Dowd. Previews: BBC Press Office, YouTube.

The Vampire Diaries (TV2, 8.30)

Stefan tells Elena about his darkest days; trying to catch Elijah off-guard, Damon arranges a dinner party for him with Jenna, Alaric and Andie. Reviews: AV Club, TV Surveillance.

Nikita (TV2, 9.30)

Nikita revisits her past when she posed as a nanny for an influential government official – and decides to right the wrong of his death; Alex suffers from anxiety and Amanda intervenes. Reviews: Daemon’s TV, IGN.

Supernatural (TV2, 10.30)

After fighting a group of vampires, Dean is bitten and turns into a vampire. Samuel tells Dean he can change him back but he’d have to get the blood of the vampire who turned him. Review: IGN.

NCIS (TV3, 11.15, 5.1, R)

The NCIS team becomes entangled in Washington politics when a distinguished Senator turns to Gibbs for help in solving the murder of a young, female Naval officer.

CSI: New York (TV3, 12.15, 5.1, R)

The most exclusive jewellery auction of the year ends abruptly when an appraiser is killed during the event. Ed Asner guest stars.

FlashForward (TV2, 12.30, R)

Mark is suspended from the FBI, and Demetri must partner with Agent Vogel. Part one of two.