Brilliant thread cc, it's much easier to work with nature, god made the leaves to fall etc. ::)
I use whole fresh leaves for 'full cover' - suppressing weeds on empty growing areas, between rows of established plants - or chop them up (with lawnmower) for mulching more delicate seedbeds or newly planted stuff, or if it's stalky or full of horse chestnut shells. Leaves are dark so they'll keep the soil warmer than light coloured mulch. At this time of year it's a FREE substitute for straw :)
Only prob is the leaves blowing away on a windy plot ;D