Some of you mentioned that my humans travel a lot. Yes, they do. They are only in Munich for three years (Summer 2006 to Summer 2009), so they want to make the most of their time while they are here. It's unlikely my mom will ever get back to Europe, so she wants to see as much as she can while she's here. As for my dad, well, travel is part of his job as an army officer, although his travel doesn't normally involve much opportunity to sightsee.
My dad is actually going to Lisbon for a conference, so it is work for him. My mom is going along to sightsee during the day. The conference my dad is attending doesn't have any evening activities, so my humans will also have their evenings together.
But don't worry, I am well looked after while my humans are gone. My cat sitter comes to visit me twice a day, and feeds me, makes sure I have plenty of water, cleans my litterbox, and plays with me. And one of the reasons I'm getting a little brother is so that I have someone to keep me company when my humans are away.
Anyhow, you are all invited over for a party while my humans are gone.