Epson released new 2200 drivers on 11/25/09 (driver 8.1.2), which states compatibility for 10.6. You may also need to install the common updater which also lists 10.6, although it was released quite some time ago so most have probably already installed this.
As far as rendering a printer useless, not sure I agree. First it isn't useless, you can buy a cheap older Mac and print from that. We have 3 4000's running, I think they're all still on 10.2 machines. I'm not sure at what point Epson should quit supporting older hardware, but the 2200 and the 4000 both to me are in that category.
that being said, they actually instruct you to download the 10.6 driver for the 4000 if you follow their Snow Leopard compatibility links, yet when you get to the download page it doesn't exist. this may be an indication they are working on it.
Wayne, thanks for the update on this. The drivers appear to work fine though I had some difficulty installing it. I don't know if anyone else has had this problem, but when I opened the DMG and began the installation, the modal dialog that requests the user's admin password to install the drivers would not stay focused...strange. Anyway, I kept one finger on the keyboard and forced focus with the mouse by clicking the dialog and then immediately typing a character. Once a character was typed, the dialog would remain focused. I have never had that happen before when installing software from any vendor.
The one thing that irks me with this whole affair is that I do believe that Epson should have updated their drivers for this printer at the time Snow Leopard was released. In fact, I had received an e-mail from Epson tech. support on Nov. 18 that they had no plans to update the drivers for the 2200 and that I should use the 10.4 driver under Rosetta (which did not work for me). Now they release an update only a week later. As a software developer myself, I understand what a monster it can be to have to update drivers for so many printers. I think that had Epson done the analysis based on continuing sales of consumables that they would have seen that the 2200 is still a popular printer. Instead, they update the drivers based on negative consumer feed back, which is never a good thing.
On a side note, I have since ordered an Epson 4880, making the jump into their professional class printer line with the assumption that their support will never waiver for their professional class of printers, though some older 4000, 7000, 9000 class owners may disagree. I think that Epson's policy should be that they will always provide support for all of their professional class printers, regardless. They should also provide support for consumer models that continue to meet a certain level of consumable sales. When sales of consumables for a printer fall below a defined threshold, then registered customers should be notified and be offered incentives to purchase new printers models. Given the nature of the business model for the inkjet market, this seems to make sense to me.