Yes, they are worthwhile. You'll either prove that your system is set-up correctly (doubtful) or be able to tweak it to give it's best.
If you're concerned at the cost of Avia, maybe try Video Essentials which, for most users, is perfectly up to the job.
Either way, if you've spent a shedload of money on kit, why not another £20 or £30 to make sure you're getting the best out of it?
Most people would not think anything of spending that amount on SCART leads, interconnects etc. yet a set-up disc will probably give you more benefit.
Fair point Sceptic... for most users these set-up routines are more than good enough, although they are supposedly optimsed for the actual disc they're contained on (hmm, they all seem pretty much the same to me!).
As if you need another excuse, Monsters Inc. comes with the THX set-up too.
This is the problem I have. I think Their website FAQ says that they have no PAL version available. I used Video Essentials to set the brightness and contrast correctly on my Toshiba 42" Plasma. But I still need to find a test pattern to configure my PAL setup. Any suggestions anyone?
Well, I don't know when they revised it, but this one has the multiple white squares for adjusting contrast etc. It also now has a test for sharpness. The previous ones that I'd seen were very simplistic (I can't remember what the T2 one was like and don't have TPM).