Are you kidding? There is tons of stuff in Beijing to choose from...
1. Chuojiaofanziquan - this is a fast, high-kicking style that is quite cool (and even starts with a weird "ghey" stance! (See here:
http://www.canadaeastwushu.com/styles/CJFQ1.html)). Some famous teachers of this style include Hong Zhitian, Wang Heling, and Di Guoyong.
2. Baguazhang - an obvious choice, as Beijing is the baguazhang center of the world. There is a whole barrel of teachers there, including Xu Shixi (Yin style), Zhu Baozhen (Yin style), Sun Zhijun (Cheng style), Liu Jingru (Cheng style), Di Guoyong (Liang style), Wen Dasheng (Fan style), and many others. (Xu Shixi teaches some sets of luohanquan (Zhu may as well), too.)