Where can this be seen?

There are combat robotic events that happen regularly throughout the U.S. (and the world!), and trying to list them all would be nearly impossible. But the major U.S. events can usually be found in these places:

Builders Database
SPARC Forums

Viewing this live and in person is an entirely different experience than in videos. It is hard to get a sense of scale and power through any form of video compared to in person. But viewing on your screen is still unbelievably entertaning, and where the majority of us have first been interested in this sport.

For television viewing, recently it was announced that Battlebots is going to be aired on the ABC Network, showing footage from thier most recent May 2015 event. This will begin airing June 21, 2015.

For your home viewing pleasure, one great option is the 2015 Robogames event, hosted by Grant Imahara of Mythbusters fame, and Dr. Kirsten Sanford from This Week In Science. You can order the DVD or Blu-Ray here:

Buy DVDs of RoboGames 2015

There are also an unblievably large number of video matches online through Youtube. For example, one of my personal favorites:

Electric Boogaloo vs. Last Rites

Try searching for "Robogames", "ComBots", "Battlebots", or "Robot Wars" for an extensive amount of online Youtube videos!