Following today's maintenance it appears that the previously unavailable Crash and Spyro games for the PlayStation are finally downloadable to the Vita handheld. If you own the PS1 Classics version of any of these games, feel free to give it a whirl now!
Thanks NeoGAF and Twitter for the news.
EDIT: It appears this was in error, as Sony has removed the ability to download these titles now. Sucks.