Depends why you lift. If you lift to get stronger and reach certain strength or physique goals, doing "unusual" lifts doesn't make a lot of sense to me because usually if something works well it's a "usual" lift. If you lift to stay in shape and have some fun during your lifting there are a lot of lifts to try.
Back squats, front squats, leg press, split squats, RDL's, Leg extensions, leg curls, lunges are all lifts I've done in the past and worked well.
Pull throughs, hip thrusts, step ups, single leg squats, glute kickbacks, glute-ham raises, kettlebell swings, goblet squats are all lifts I've never performed with any regularity because, in my opinion, they don't really fit my goal of building the best physique possible. (Well, GHR might be great but they seem like a huge injury risk to me the couple of times I've given them a shot).