Simplest solution is still a Slingbox. Connect the Slingbox to a receiver (depending on the size of the TV, you might want the HD capable Slingbox, but for a 19" or 20" TV the SD Slingbox should be sufficient) and use the Slingplayer app for your tablet with a HDMI cable between it and the TV. The only "catch" is that to watch some premium channels, and if you have a TV attached to the HDMI port of the receiver where the Slingbox is attached, that TV would have to be on. The workaround is to not use HDMI and connect both the TV and the Slingbox via component.
With a Sling/tablet solution, the only wired connection required is power for the TV (and maybe for the tablet if you are going to watch for many hours). You would have no recurring costs, just the initial purchase price of the Slingbox and the player for your tablet.
I have the new slingbox 500 and I love it, great picture quality. I agree that a slingbox is the way to go, but you do not need to have a TV on. You connect both the HDMI and a component cable to the slingbox and it chooses one or the other based on the programming. The nice thing about the slingbox is you can use the android app, web based application or any number of alternatives (google tv, WD TV, netgear neotv, etc). I use it on the road and use it to watch tv on my projector outside.
Edited by lincolnnellie, 25 April 2013 - 10:13 PM.