Yup - that was actually an old job, but at @MakeshiftHQ we have a streamlined real-world version for each project we work on.

We're a small team (4 designy-devs + 3 others at the moment) and we're almost always in the same room so it's quite nice to have the liberty of having a real, physical, 'can pick up the card and put it next to my monitor' board, but we also keep our Trello up to date in case we're working from home.

In a similar position and fantasising about being able to afford a monitor big enough to stick on the wall...

Trello is indeed awesome. Just add a task, bug or an issue and it can be picked up by someone, anyone for that matter, without the need to assign it to anyone in particular.