Baba Ghanouj is a favorite of mine.
Aurora Boreallis got tsatziki right.
I think the eggplant dish you're thinking of is moussaka. If not greeklawgirl,kitso, or kdonline can put their nickel spin on it.
I'm not familiar with the fish eggs one. The regions of Greece where my family is from has never made that one, I don't think. Sounds interesting.
Kilarney, here's a website you might like.
http://www.eatgreektonight.com/
There's a page where you can pick out ingredients and it directs you to recipes.
I hope it helps.