Simply type the list name in the appropriate box and click "Create List"
Type the name of the item, select the list you wish to add it to, and press Go.
It does right now, yes. I've toyed with the idea of just striking it through. The workflow would be: create a list, add items, check them off one by one, when everything is done then delete the list. I'm undecided as to whether this is a better way to do it than what's currently there. Feedback is appreciated.
E-mail me.