An hour in Walker's company and you'll know not only his star sign, but his hopes, dreams and curriculum vitae (rock star, impersonator and pebble-dasher). Immensely likeable and dynamic, Walker shows potential in comic avenues such as impersonation and sketch comedy, but ultimately the stand-up style of the show lacks climactic impetus.

Gilded Balloon Teviot, 622 6552, until 31 Aug, 8pm, £8.50–£10 (£7.50–£9).