Spotted this today on lupin-3rd.net. It appears that two specials screenings of Lupin will be taking place in Japan. On 13 May, you can watch "Mamo", "Napoleon's Dictionary", and five TV episodes. Special guests include Monkey Punch.
On 20 May, you can watch "Cagliostro", "From Russia with Love", and five TV episodes. Special guests include Yasuo Otsuka.
Admission is only 2500
¥(~25 US$) with discounts for members of the Lupin the Third Theater (the online video provider) and members of the theater hosting the event. Special gifts will be given out to attendees along with special merchandise being on sale.
Damn... if anyone reading this is in Japan on either of these days, try to get there and take some pictures! I need to move to Japan...