Most experts recommend against printing onto sticky labels and sticking them to your discs. They knock the disc off balance or gum up your disc player.
I would suggest that you print directly on the DVD discs. You'll no doubt get many replies from people who strongly discourage printing on sticky labels and from those that have had success with labels. I'm in the discourage camp.
I have a Canon iP4500 that I bought from a Canadian source on eBay as that's the easiest way to print discs on Canon printers. There are sites that show you how to crack US versions.
Epson has the exclusive rights to DVD printing in the US (at least I think that's still the case) so look at those.
Here's a site devoted to Inkjet printers and refilling (as I do):
Pretty much any inkjet printer will print onto disc labels as they are right out of the box. There's no need for a special printer at all. You can probably even get the label blanks for laser printers as well.
However, do not use labels on your discs! As the others have mentioned, it's nasty and messy and can cause lots of playback problems. The label *WILL PEEL* in the drive, eventually, probably sooner rather than later, and will most likely destroy the disc and the drive it's playing in when it happens.
I've even had some discs that were destroyed when the label fell without off being played because the reflective coating on the top surface of the disc flaked off with the label.
I would much prefer printing on the disk, and the printer be only capable of printing on disks. That is, not part of a printer with a "normal" printer.
The Canon one referred to here, and the HP i've got, are regular multi-function printers that do normal printing on paper just as well too. If you click on the first link Steve posted you'd see it for yourself.
I just downloaded it using the link I provided to test. Not sure why it was blocked for you.
I'd be glad to email it to you if you can't get it. Reply with your email address in some sort of obfuscated way. You can edit your post to deleted it once I reply that I got it.
M,
it seems your link's still blocked, at least for some of us. You do remember that if the user has chosen to allow emails through SCS, you can click name to email?
Btw, I use a Canon MP640 to print on discs, it's been great.