Just found this forum, and it looks quite cool! (I particularly like the irony of having so many "anti-bot" measures to sign up!!)
Anyway, thought I'd share a few videos of a robot I've been working on with a few other guys at Middlesex University in the UK- Heineken Bot. It's been in development for around 10 months now, and has gone from a simple fun, "stick a bit of beer in a cup" sort of thing, to something that can actually be feasibly used to pour a decent beer every time! It's based around heineken's draughtkeg system, which is a small pressurised mini-keg available from supermarkets over here. The robotic components are magnetic, so it's very easy to change the keg.
This was an early-ish version, the pouring was timing-based, and quite unpredictable:
We've now got it controlling the pressure in real time to compensate for changes of pressure in the barrel (this was filmed for Danish TV in the summer, apologies if (like me) you dont speak the language!):