I had a memory boy and it oscillated just lovely; you can also use the expression pedal to tip it over from useful playing into oscillating chaos too. The only thing that stopped it sometimes was when people didn't use the supplied adaptor - they could be fussy about their power draw.
Yh the memory boy does quite nicely and you can manipulate it with the different modulation and wave forms in a very unique manor. Its one of my favourite features of the pedal.
Thanks for the replies. I may have to buy one as the oscillation on my Boss DD3 tends to go mental, is difficult to control and makes audience members ears bleed.