'I am just full of the Christmas spirit and I bring tidings of comfort and joy." Thus spake the slightly-less-than-angelic presenter of Nigella Express (BBC2) as her latest series dragged to its self-parodying end with an episode inventively titled "Season's Eatings". Bah! Humbug! You can count me out of any Christmas celebration if it involves Nigella Lawson. She is a byword for the supposedly sexy way she behaves, but her pouting leaves me as cold as turkey on Boxing Day. Even more embarrassing than Nigella's smirking at the camera is her overblown vocabulary. She talks as if she has just discovered alliteration. She showed us how to prepare "fast festive food" consisting of "get-ahead goodies" (including "holiday hotcake" and "party popcorn") for our "full-on festivities". Her recipes are full of "gorgeous goldenness" as well as "golden gorgeousness". Watching Nigella feels like drowning in golden syrup.

Worst of all is the way that she absolutely LOVES everything. She LOVES muscovado sugar. She LOVES the greenness of pistachios. She LOVES the look of her party popcorn. She even LOVES "salt and sugar together". Looking adoringly at a glazed ham, she said: "I LOVE everything about it".

Britain Sings Christmas (ITV1) assembled a group of largely tone-deaf celebrities as a choir to sing bits of ten Christmas songs chosen by "an independent poll" as Britain's favourites. The choir included such notable (not-able) vocalists as Jo Brand, Craig Doyle, and Simon Bates (who confessed "I've never sung in my life"). We were repeatedly exhorted to phone in to vote for our favourite seasonal song, and some (but not all) of the proceeds would go to charity (the Prince's Trust). The on-screen message told us to end our text messages with "NO INFO" if we didn't wish to receive marketing texts. The message was that old Yuletide favourite: We Wish You a Commercial Christmas.

Can Gerry Robinson Fix the NHS? (BBC2) showed how commercial pressures threaten to undermine the health service. Gerry Robinson revisited the hospital in Rotherham where he spent six months last year trying to introduce improvements. He found that the local Primary Care Trust is planning an expensive new 'polyclinic' which will "cream off the easy stuff" and leave the difficult work to be done by the underfunded hospital. Gerry also noted how the hospital's morale is reduced by the government and Whitehall bureaucrats continually introducing reviews and new initiatives.

The internet has opened up many new avenues - especially for people to express their opinions and experiences through "blogs" - that is, weblogs or online diaries, of which there are now more than 100 million. Sex in the Noughties: The Sex Blog Girls (Channel 4) looked at some notorious blogs which started appearing in 2004 - notably one called "Girl With a One-track Mind". Zoe Margolis set it up (using the pseudonym Abby Lee) to record her sexual experiences, and its popularity led to it being turned into a best-selling book last year. Interviewed by the programme, Zoe told how the tabloids revealed her identity and harassed her, but the response to her blog made her realise she wasn't alone - and many women felt as she did.

If you prefer women with purer reputations, you may like the squeaky-clean singer Katherine Jenkins and ballerina Darcey Bussell. The South Bank Show (ITV1) filmed preparations for their new show Viva La Diva reviewed today on Page 7 - Ed, in which Katherine tries dancing and Darcey tries to sing. Katherine's dancing looked more successful than Darcey's singing, since the latter's voice is not something to write home about. The documentary was like one of those "The making of . . ." programmes which act as shameless commercials for films or shows. It approached Viva la Diva uncritically, even though the show looked like being an unsatisfactory mishmash of song and dance, presented under the shaky pretext of the two ladies paying homage to people who inspired them. Apparently the tour has sold out anyway, so they won't mind if I don't buy a ticket.