Back in 2005, Mega Man Maverick Hunter X hit the PSP with a pretty awesome OVA titled "The Day of Sigma." The main problem is that it was previously only available on the UMD itself, with a 480x272 level of video quality -- obviously not ideal.
YouTuber Silk Encoder has rescued the original however, and has patched it up to 1280x720. If you've never seen it before, it's a quick 25 minute prequel romp that highlights how amazing it would have been for Capcom to continue the Maverick Hunter series on to X2 and beyond.
After watching it, you'll subsequently become depressed at how Capcom has handled Mega Man since.