What are good ways to meet new people?

I am a single 29 year old guy and in need of a woman. I have been single for 6 years because the right one has not come along. I think I am cute enough with a good height and on the slim/fit side (5'10 160lb constantly trying to bulk up but it is difficult becuase of metabolism and genetics). So I think I just need to start meeting new people because I sit in a cubicle all day with older people around me everyday. All of my friends have girlfriends or are married so there is no one to go out and meet people with. Does anyone have any ideas of things I can do on my own to meet new people? I am not about to go to a bar by myself and when we do go out to a pub we are confined to people at the table. I would join a coed softball league but they are always only looking for girls (as is me!) It is hard to find any good clubs to join also. Any suggestions would be appreciated.