Now before I begin I know this is from GameFAQs... As a foot note to the old Sega intro to the Sonic games and various others. You know it SE-GA! with sega in blue on a white background. "According to Sonic creator Yuji Naka, that little clip used up 1/4 of the cartridge’s space, space that was originally going to be used for Sonic break-dancing to a band in the background." Anyone know of any credence to this?
I don't believe it. A quick calculation of a sample for about 2 seconds shows that, even at CD sampling rates (44100 hz), it'd only take up about 88k, quite a bit less than a quarter of the 512k of Sonic. And I doubt it's at CD quality.
Remember, this is the same Yuji Naka who claimed to have produced a fully working Famicom emulator for the MegaDrive! I'm not one to doubt him, but surely you can understand why someone may want to take anything he says with more than a pinch of salt? Continuing the Sega theme, another random fun fact is that Shenmue was originally intended as a spin-off RPG from the Virtua Fighter series, with many of the final version's characters still bearing uncanny similarities to personalities from Yu Suzuki's other best-known franchise.
They kept teasing another "VF RPG" which became "Virtua Fighter Quest". I never played it - looked too much like the Pokemon bandwagon, but I'm curious now.