Thought I would pass along a great, inexpensive TV for MAME cab.
Circuit City sells the ESA 27" TV (ET427E), with s-video input and speakers on the bottom.  Right now they are selling for $179 with $10 rebate.  I just got one and love it - the TV remains on s-video input and power on when unplugged.  It also is relatively lightweight and compact for a 27" tv & it fits nicely in my UAII cabinet.