This commissioned work by artist Chris O’Shea has an enormous hand alternately crushing, picking up, and tickling passersby. It certainly is reminiscent of the Kids in the Hall sketch with the head crusher (which I have embedded below for your convenience). It appears to work more or less automatically, effacing people it picks up or shrinking them. Not the hardest thing to do (especially with a decent background image) but, I imagine, difficult to do dynamically like that. All in good fun, though.
If you’re in Cardiff or Liverpool during the next couple weeks, check this thing out.