Reader Matt G. sent in a tip, detailing a number of PS1 titles rated by the ESRB that have yet to be released on PSP/PS3. These downloadable classics should arrive on the PSN some time in the future -- but when?
Wipeout XL (E)
Jet Moto 3 (E)
Super Puzzle Fighter 2 Turbo (E)
Buster Bros. Collection (E)
Street Fighter Alpha (T) -- previously discovered, not released
Castlevania Chronicles (T) -- previously discovered, not released
SCEA has been slow to make PS1 classics available on the PS Store. We're eagerly awaiting a version of Puzzle Fighter we can take on the go.