If you're yearning for a round of Tomb Raider or Final Fantasy VII but tossed your old PlayStation 1, hey! PSX4Droid is here, for $5.99. Unfortunately very few users got to try it out due to a Google Checkout problem that prevented installation. Developer ZodTTD reports in his twitter feed that over 6000 people purchased the app but were unable to install it until today. Several hundred purchases went through and downloaded mid-morning (Pacific timezone).
The app is for "high end Androids" but according to the developer's description, version 1.0 should run on all Android releases. You can see several videos of the app in action on different phones on Engadget, plus here it is running on the DroidX.