I've seen this one around a bit... most recently on the MTVU page but also on a Weezer Tour shirt... sorry for such small, fuzzy pictures but they were all I could find!
Typophile
(x) MTV / Weezer Font - New Zelek {Mark S}
Sorry, gave you the wrong link, try
this one.
Hmm. That link doesn't seem to work. In any case, the font is New Zelek, an old Mecanorma face. The numbers are something else, though.
Nevermind.
Yeah, I figured the numbers looked mocked up for the second logo... but New Zelek it is. Thanks guys.
Captured from web.archive.org on 14 Nov 2014. view this capture