St Katherine's Greek Fest in Falls Church this weekend.
Also the Russian Orthodox Church on upper 17th St. is having a food feast this weekend I believe.
The Russian Orthodox church on Mass. Ave. near 35th St (& the Cathedral) will have their food fest I think Oct. 18-20.
And the Armenian Church at Fessenden & 42nd St (off Wisconsin) will have their feast Thurs-Sat Oct. 24-26.
Check The Post Weekend and Thursday Extras every week for other area food fests, sponsored by assorted Eastern European orthodox churches.