Could just be me being fussy, but on that list I'd only be interested in Poirot, Darts & Hannibal... and ONLY if they were in 720p/1080i HD, not merely SD upscaled at source. The upscaling in the TiVo performs is good enough on regular SD channels.
Lousy HD, eh? I'm amazed you'd say that, considering VHS had a resolution of something like 352x240 (which we put up with for decades) and most people have only upgraded to LCD 1080p HDTVs in the past few years. Take it from someone who often gets snobbish about picture quality... most people can barely tell the difference, and don't care even if they can. Many can't even see that a majority of LCD TVs come out of the factory with whites that are light blue, even when it's pointed out to them.
As a rule people care about convenience, not quality. That's why there are a bunch of low-bitrate Freeview channels with decent content spread thin across them... unless you're the nerdish kinds like us getting the most from your equipment is irrelevant. Though I do get annoyed with the thought of many thousands of LCD, LED and plasma sets not calibrated and going to waste on the undiscerning eyes.
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Getting back to topic, what I would like to see is "presented in HD" or a simple "(720p)" on the end of the EPG description when it comes to shows airing on HD channels. I don't like sitting down to watch a film I've seen before in SD on a HD channel to find out it's only upscaled and looks almost no different to the version on it's SD channel counterpart.
I like the BBC model of having not only a BBC1 HD channel, but a dedicated BBC HD channel that shows nothing but high def content. Even the animated/recorded logos are shot and produced with HD in mind, usually featuring lots of detail and bright colours which gives a subtle indication to the more eagle-eyed among us that yes, this is indeed HD all the way.