Celebrity Big Brother: Live Launch C5, 9pm Well, we all knew it was coming, and here it is at last - the latest celebrity version of the long-running reality show. Let's face it, in recent years it has lost some of the sparkle it had back when it began on Channel 4 and the likes of Jack Dee, Mark Owen and Ulrika Jonsson proved popular with viewers. Nevertheless, the last run, which aired in January, had the highest ratings of the series since it switched to Channel 5, perhaps due to the presence of such high-profile figures as Katie Price and Katie Hopkins - who ended up as winner and runner-up respectively. So, who will be taking part this time around? Rumours are rife, but all we know for sure is that the run will have a UK v USA theme, to spice matters up a little. Emma Willis hosts the main show, while Rylan Clark fronts spin-off Bit on the Side.
Prosiect: Ed Holden (Mr Phormula) S4C, 9.30pm Ed Holden (AKA Mr Phormula) yw'r unig fitbocsiwr yn y byd sy'n gallu treiglo. Mae'n fwy na cherddor, mae e hefyd yn offeryn. Yn y bennod yma o Prosiect byddwn yn dilyn taith a bywyd Ed wrth i'w allu i wneud synau anhygoel gyda'i gorff ei arwain o'i gartre' ym mhentref bach Llanfrothen i bencampwriaeth bitbocsio Prydain yn Brixton.
Who Do You Think You Are? BBC One, 9pm Actor and stage director Derek Jacobi enjoyed a relatively humble upbringing in Leytonstone, London, where his father ran a sweet shop and his mother worked in a drapery, but research into his maternal side of the family soon uncovers a link to a far more intriguing past. Discovering that his great-grandmother's name was Salome Laplain, Jacobi finds that he is descended from a wealthy French Huguenot who fled religious persecution, and who has connections to royalty on this side of the channel.