It's 21h25 in Pretoria

[Trevor]

and I can't get to sleep. Hot tea doesn't help - even a quick sniff of my undies doesn't knock me out.

Help!

[Cthulhu]

Watch Eegah or El topo.
Either of those will do the trick.

[Jack]

Large amounts of alcohol consumed over a 4-5 hour period usually does the trick for me 

[retrorussell]

I may have mentioned this on another thread but:

Play the "alphabet game" to keep your mind working till it gets tired.  Think of a song that starts with A, then go through to Z.  Then a movie title, then maybe band names, then restaurants, etc.  You get 3 letters to skip if you need to.  This gets me to sleep after a while.