I work in a smaller community hospital and do mostly general, GYN, and ortho cases.
The drugs I see most are:
Marcaine (0.25% or 0.5%), Marcaine with epi, Ropivicaine, Lidocaine (1% or 2%), Lidocaine with epi, Bacitracin, Depomedrol, Thrombin, Vancomycin.
Some of the local anesthetics are often mixed. For example, a podiatrist I often work with regularly uses a 1:1 mix of 1% lidocaine with 0.5% ropivicaine. Today, an otho surgeon used 1 ml depomedrol mixed in 0.25% marcaine for injection at the end of the procedure. Some surgeons put bacitracin into their irrigation fluids, it's a matter of surgeon preference where I work.
While anesthesia always administers the pre-incision antibiotic, I make sure I'm familiar with them. Ancef is the most widely used in my hospital; however, it can't be used in patients with a penicillin allergy. Clindamycin is often used in these cases. You'll also become familiar with other items given by anesthesia like propofol, versed, succinylcholine, and pain medications like toradol and morphine. I know some places qualify their OR nurses to do moderate sedation, so you might need to know about the drugs involved there. I don't do that, but thought I'd mention it.