I discovered this show through, of all places, the WrestleCrap forums (now the FAN forums), which are filled with bronies.
You need to watch this if you haven't given it a try, seriously. It's well-written and often very funny. If you don't get The Hub, all of the episodes from the first season are up on YouTube. I personally recommend starting not with the pilot (which IMO is good but not the very best), but with "Sonic Rainboom", "Dragonshy", "Feeling Pinkie Keen" or "Bridle Gossip".