Searching the sky

When is someone going to come up with a search / tagging system for Sky TV? I could set up a watch list, and get it to alert me to programs coming up based on my preferences, or I could search for a program by subject, as well as title. Not much to ask is it? Have a feeling this is something TIVO does quite well. Be nice to see it in the single largest multichannel platform in the UK. I must have something in the region of 300 channels (or more) but no way of navigating my way around them unless I already know something is there.