House/QAF - House/Wilson and Brian/Michael - could easily happen, remember Brian had testicular cancer diagnosed by a trick. Lots of flirting going on makes "he's just my best friend" designations questionable.
House/Due South - H/W and Fraser and Ray Vecchio (not Stan). Much opportunity here for verbal dueling.
House a la Cold Comfort Farm - This one hit me out of the blue when a story showed up titled "Cold Comfort." Stephen Fry's in it, as well as a host of other big names. In case you haven't seen the movie - http://www.austinchronicle.com/gyrobase/C