I will be the first to admit that I am not the biggest fan of pushups. But, they are a great upper body exercise.
I do two sets of 12 on upper body days. They're getting easier, and I've started modifying them to avoid boredom. For example, I do Spider-Man pushups. I'm up to about four before I shift back into regular pushups. They're hard! Watch this video, then give them a try:
Question: How do you feel about pushups? Do you modify them?