TV Guide are in a spot of bother with the broadcasters over deep-linking to their content (and therefore wrapping their own ads around it), but that doesn't detract from a simply great product which combines information, a loose social network around something people feel very strongly about (TV), and an extremely "sticky" site.

I've long thought that in a multi-channel world, where people can access media in a non-linear fashion there are a number of key steps to ensure people can actually find that content.
1) Create advance buzz around the content itself (via trails, posters, word of mouth)
2) Deliver it via a trusted brand (hence all the broadcasters very carefully branding their channels as signposts to the content)
3) Make it easy to find - either via specific search, or by accident.
And it's point 3 that's going to be really interesting going forward, particularly when it comes to TV programmes. In short - it's whoever who controls the EPG who has the power in this relationship with the viewer. I'm not going to predict who that will be (and quite like the fact that at least some of it is regulated by OFCOM) - but it's no co-incidence that positions on the Sky EPG change hands for a small fortune.
Where it all gets even more interesting is when more and more people start to use things like tvguide, or tvtv, or even joost or bebo, using the service to both find things they want to watch them, and then to watch them within that portal. Interesting times ahead. Especially when the content is either on-demand, or the apps will record them for you (tvtv) or add a reminder to your calendar (tvguide) for you.
And I'll put good money on tvguide.co.uk being a big player in the years ahead. But Kangaroo (what a name) will launch with a bang and soon try and jump into the lead (sorry)...