If only drinking alone wasn't so pathetic...
Take one drink anytime:
Jack says, "Fer cryin' out loud."
Teal'c says, "Indeed."
Teal'c raises an eyebrow
Jack cuts off Sam in the middle of her technobabble
Jack mispronounces a technical or alien word
Someone makes a Wizard Of Oz reference
Someone makes a Star Trek reference
Someone makes a Star Wars reference
One of the team is the object of someone's lust (once per episode)
Jack and Daniel get into an argument over civil rights
Someone/thing splats against the gate's iris
Someone from Earth gets taken over by a Goa'uld or Tok'ra
Someone from Earth (including Teal'c) gets taken over by anything else
One or more of SG1 gets shot (includes zats)
One or more of SG1 "dies"
One or more of SG1 has to help out a child (once per episode) (includes Teal'c's son up to, oh, season seven)
Jack smarts off to someone holding him prisoner or at weapon-point
An SGC "redshirt" dies
Sam's father calls Daniel "Danny" (can be tough to hear, so listen closely)
Whenever General Hammond says something about disobeying a direct order
Every time Hammond uses the Red Phone
2 drinks whenever:
Sam (an astrophysicist) or Daniel (an archaeologist) end up on a stake out or a "dynamic entry", guns drawn, here on Earth
Teal'c smiles
Teal'c kisses someone
Sam refers to Jack by his first name
Daniel receives a "fatal" injury. (Whether or not he ascends or finds a sarcophagus)
Hammond goes offworld
SGC personnel lose control of Prometheus
Every time someone ascends or changes into that bright-white-ribbon ascended form