As you can see from the above snaps - look through the windows - it appears that at least one member of the Torchwood team (possibly Ianto - judging by that snappy white shirt and waistcoat number) gets some down time during the series, and finds time to play a little game of what us Brits like to call snooker.
No doubt Captain Jack would have a lot to say about Ianto (or whoever it turns out to be) shooting balls into a table's pockets. Innuendo. Innuendo. Innuendo!
*Picture credits to Brian_Damage over at OutpostGallifrey - thanks!