One word: Tea (any type, preferably earl grey) and Marmite toast.
once my hangover was so bad I couldn't actually move for a whole day afterwards. I just lay on the couch at a friends house. hair of the dog did not work. I only managed half a beer before admitting defeat.
I tried the above method and it settled my stomach. still couldn't hardly move properly though...
Wanted: lotsa awesome free stuff.