Luis Alvarez is organizing a GTG in Berlin in April so I'd thought I'd mention it here. I doubt if I'll make it but I wish I could, I'm guessing it'll be a great time.
Here is some info
Here we go again with a cool meetup in Berlin! For this event, the main focus is social, sharing and learning. We will have no group photoshooting, instead the program will have
* Great chats each evening at nice restaurants and bars
* A small photoshop exchange session, where we bring our laptops and images and share tips and tricks to improve our imagery
* A meetup with Dittmar Frohmann, director iStockphoto Europe, to have a friendly and open discussion about photographer issues directly with iStockphoto's man in Europe
* Assistance from me to organize your own photoshoot while you are here
* Sunday evening contest where we will see the coolest pictures with a beamer at a nice bar and choose the best pictures taken during the weekend. The winner will get a small prize!
And you can express your interest and vote on which weekend works best for you here
https://docs.google.com/spreadsheet/viewform?formkey=dG1nbDQ5WFl1eVZJeVVTUC03QWZCMEE6MQ