The upcoming PSP game, SNK Arcade Classics Volume Zero, now has a trailer available. The game is coming out next month, and will feature old hits like Athena (arcade version) and Ikari III. Add this one to your must import list. Hopefully if this one sells well enough, SNK will bless fans with a true volume 2 with kick ass games like Mark of the Wolves and Last Blade.
Athena approves of this post.