Commendably, the TV guide actually covers all the free-to-air networks, not just Ten's offerings. One of the more notable features of its show information section is direct links to the relevant Twitter feed for each show.
The video playback feature seems a tad buggy on my iPod Touch, though unless you're on Wi-Fi it's an option you'll want to avoid anyway. The fact a list of videos loads on the main home screen also made launch performance a bit unimpressive. However, as a first attempt at a network app, it's pretty good, if not up to the standards of the rival ABC app.
Channel Ten is a free download for iPhone.