Probably a few similar lists, but ...
1. Drink a sip every time someone calls him "H" not "Horatio"
2. Take one swig every time H places his arms akimbo (on his hips).
3. Take two swigs when Horatio takes his sunglasses off for dramatic effect.
4. Likewise, take two swigs when Horatio puts his sunglasses on for dramatic effect.
5. Take three gulps when H wears a dark blazer in the middle of an investigation. (Hello, pastels…this is hot and humid Miami…Crockett and Tubbs land, remember).
6. Drink for four counts when he addresses Jonathan Togo's character as “Mr. Wolfe.”
7. Drink for five counts when he’s talking and his head is tilted at a 45-degree angle. (Don’t forget to add another count if he has his arms akimbo at the same time.)
8. Drink for six counts when the camera films him entering the scene from a low angle for dramatic effect. Some games refer to this as the "Horatio-as-Christ" shot. (Is this because he’s short? IMDB lists him as 5’11.”)
9. Drink for seven if you ever see him smile. (This is extremely rare, but it does happen on occasion.)
10. Guzzle the entire can/bottle when an incredibly hot babe hits on Horatio. Cause, really, she must have the beer goggles on. Or we should put them on in order to buy it.