ESRB listings have pointed to five more games that could be headed to the North American PlayStation Store as PSOne Classics. Here's a collected screenshot of the listings:
You may remember that Spyro 2: Ripto's Rage had already been released on the PSN but was subsequently pulled due to level loading problems. This listing could be for the old release, but it could also mean that Sony's fixed the game's problems and is readying it for another go. Street Fighter Alpha 2 and Alpha 3 could also be the start of Capcom's plans to bring more PSOne games to the US PSN.