I’m a big fan of the deadlift and the overhead press. Both exercises train movements that are vital for all of us who live on a planet with gravity. With the deadlift we pick up something heavy off of the ground. The press has us putting something heavy overhead. Both exercises feature minimal equipment (typically a barbell), they train the whole body and they require all sorts of balance, stability, mobility and coordination. While we could argue all over the place about this, I tend to think these two exercises give the most bang for your workout buck. If I were condemned to an eternity of being able to do only two exercises, I’d pick these.
Sometimes these movements are performed in a less-than-optimal way. These two videos do a great job of showing how to correct problems with each exercise.