My GF and her husband have been doing tango regularly for about 6 years. They've gone to Argentina a couple of times on tango safaris. I'm aiming more toward other ballroom dances partly because tango is so much their thing and partly because from her descriptions the tango community in our relatively small town is rather closed and incestuous.
I'm starting with a ballroom sampler class which teaches 4 dances in 10 weeks. It will be interesting and I hope it will be fun!