I miss all the fun stuff. World Naked Gardening Day (nsfw) is May 3rd so mark your calendars for next year! 5/3/2008 was the fourth World Naked Gardening Day held.
To make it easier to ditch your clothing and garden naked consider Compost Clothing which is clothing designed to be tossed on the compost heap when you are done. The clothing is made out of potato starch and hemp. No more trekking mud through the house to the laundry room and dashing naked to the shower after gardening. Now you can toss the clothing in the compost bin and dash to the shower.
In Oregon one person takes naked gardening serious and does so year round. While not yet illegal in Portland Oregon the locals are working hard to be sure it will be soon.