I thoroughly liked it when I played it on the All-Stars Wii version. I needed some save state action to accomplish it though. I wouldn't be able to beat it without saving after certain levels. I won't be watching this whole 2 hour + video but it's a fun idea nonetheless.
I played through it all and beat it on SNES (Super Mario All-Stars) and then did it again on Gameboy Color (Super Mario Deluxe). It's a neat little game that will challenge Super Mario veterans. I don't find it as fun as the other games in the series. Still worth playing though, IMO.