Before Super Mario All-Stars
got the name we're familiar with (and the even more staid Japanese game "Super Mario Collection"), the team considered other titles, including the more exciting "Mario Extravaganza." That's one of the factoids revealed by this Iwata Asks interview
with Naoki Mori and Tadashi Sugiyama, who worked on the SNES remakes of the NES series. It became "Super Mario Collection," as far as the two could recall, at the suggestion of Shigeru Miyamoto.
After the break, we have a video detailing another factoid: the composition of Bowser's castle in both the NES and All-Stars versions of Super Mario Bros
. We promise you've never paid this much attention to that castle.