Bench Press Tip:
Don't think about lowering the bar to your body and then pressing it up; think about pulling the weight towards your body, and then pressing yourself into the Bench and away from the bar. It helps with stabilization and control. Also, SQUEEZE THE BAR! Get a good grip; don't just grab it and press.
When you're coming up out of the hole, consciously push out with your knees. This will prevent any buckling. Keep the weight on your heels, not the tops of your feet.
Do it barefoot. It's great for stability.
Form follows function.