Suggest a HTPC/STB connected to the TV, and the Xoom using a remote-access app. Boxee just announced an iPad app for May, and an Android version should follow. XBMC has a beta remote app for Android you can try. Then there are proprietary solutions like Slingbox, Orb, etc.
You don't want to stream FROM the tab. HD-thru-wifi is always iffy, and you'd need double the bandwidth (for vids going to the tab, and from there to the TV). Streaming from HTPC, preferably thru a wired pipe, would also bypass the Netflix/Hulu constraints on mobile devices.