Rivers/Matt live video footage posted
Weezer.com and MattSharp.net have joined together to make available the video footage of the Rivers Cuomo and Matt Sharp reunion show back in February. You can download the pair performing "Say It Ain't So" and "Undone - The Sweater Song" acoustically here and here. MattSharp.net will be posting the other two video clips of the duo performing later today, so keep checking back.
UPDATE: Here's the link for "Time Song," the 2004 collaboration between the two. Still searching for the fourth link...
UPDATE 2: Here's the fourth download, the song is a pre-Weezer collaboration called "Ms. Young."