Here are a few videos that have recently turned up on YouTube of Dean Wareham plays Galaxie 500 shows...

XOYO London 24 April 2011
When Will You Come Home

Ceremony

A couple more:
Listen The Snow is Falling
Plastic Birds
Review: Dean & Britta at XOYO, London
Dean & Brtta at XOYO on AHFoW wiki

The Liquid Room, Tokyo 6 October 2011
Plastic Bird

Cheese and Onions

Dean & Brtta at The Liquid Room on AHFoW wiki