Korean gamers don't just love playing, but watching others play games, too! Korean network MBC Game has been broadcasting real-time-strategy game StarCraft matches for year. So broadcasting RTS Halo Wars makes sense.
MBC Game also broadcasts Warcraft III, Tekken and Counter-Strike. As game site Siliconera points out, all three home consoles are available in Korea; however, none of them have reached the popularity of PC gaming. Perhaps that guy's grey vest will help.
Starcraft TV Network Gives Halo Wars Its Own Show [Siliconera]