I've been to Motor City Nightmares the past couple years and for me it's always been a scary good time. Last year I hung out with Kyle Gass from Tenacious D. This year's guests include Tony Todd who was recently seen on Chuck but is best known as Candyman and Sid Haig from the Devil's Rejects and several hundred other horror movies. There's several more guests, vendors selling all sorts of horror related merchandise and your chance to see several local short and full length horror movies. There's plenty to do their the entire weekend. Hours are Friday 5pm -10pm, Saturday 10am -7pm and Sunday 11am - 5pm at the Sheraton Detroit Novi.
Here's a podcast I did last year featuring material form last year's MCN: