I've used the default task manager in the BB, todoMatrix, ideaMatrix and PocketDay Lists. If the task manager isn't doing it, probably the next best program is PocketDay Lists.
I use todoMatrix on a daily basis and it is a really nice program, but overkill for just making a list. Additionally, the field lenght is fixed at 256 characters for a item description, so it may not be enough to actually create a list. You may want to look at ideaMatrix but again, PocketDay List is probably the best choice for a list application.
Pocketday:
Cross River Systems
todomatrix:
Welcome to REXwireless!
Regards-Michael G.