Deadlifts,squats,bench press,cleans etc.Peps to add mass vary depending on the person but i have fond that reps in the 6-10 range to failure stimulate muscles,but it is also adequate rest and recovery as well as a sound diet that will give you the results that you want.
Compound Exercises....the ones people often leave out because they work 2 muscles--guy is doing a chest/biceps day or a back/tri's day and doesnt wanna hit the muscles on the off day.