We weren't even drinking at the time, honest.
My entry:
Dante descended
Through sinners concentrically,
Till he saw the sky
Now, you can probably guess where I'm going with this...
![Devil :devil:](./images/smilies/devil-smiley-029.gif)
One rule: you may not begin a limerick with any variation on the line:
There once was a hobbit named xxx
Because I said so.
![Razz :P](./images/smilies/77tongue.gif)
Bonus points for incorporating features of classic haiku (cutting words et al).
Chains of three verses for LOTR would be fine too.