Egypt is one of the hottest in the word, but ONLY for investors with strong stomach and appetite for extreme high beta the Egypt index dropped more than 50 % last year , mainly because of the "Arab Spring". For 2012 , it's up more than 30 % . Will it reach it's high of 2011 again, i don't know. The Egypt exchange is open on Sundays and currently up 2 % ( as per bloomberg).
So if you have an appetite for high risk , take a look at EGPT