The airlines that I remember flying with are:
MEA: I don't want to say this cuz i'm from Lebanon but our airlines are quite descent (good service, very friendly stewardesses (some are quite hot

), food is good). The only thing that bothers me are the other Lebanese passengers who keep on complaining just for the sake of complaining (True incident of a guy I overheard: U only have chicken or beef. Don't u have any shrimps

). Of course you can't compare MEA to Qatar Airways or Emirates Airlines since they're both ranked in the top 10 airlines in the world. Downside: Tickets are expensive.
Emirates Airlines: Probably one of the best airlines in the world. I never got to try their Boeing 777 but they got the whole package especially if u want to talk about the entertainment sector (I flew with them a few years, so i'm sure their services are even much better now).
British Airways: Service is good if ur a drinker

. The bloody marys that the stewardess served me were quite nice. Of course out of all the people the guy next to me turned out to be Scottish and he was drinking like a fish and I couldn't understand one word coming out of his mouth

. Food though wasn't the best (no duh since I never really had a good meal when I lived in England).
Olympic: Descent airlines. The ticket prices where really good (That was in the late 90's). Food was good (I like feta cheese

)
Alitalia: Really hot stewardesses. Service is good as well as the food.
KLM: Very nice. Everything was great (can't remember details since that was in 1988).
Iberia: Weather was horrible and we had quite a bumpy ride right after take off. We were on our way from Barcelona to Los Angeles so the flight was very tiring as well. As for the airlines I don't remember anything specifically bad (That was back in 1991).
Cyprus Airways: The flight from Beirut, Lebanon to Larnaca, Cypus is 25 minutes and even though i've been to Cyprus like 5 times I used to consider the flight as a cruise. They even barely had enough time to serve us juice.
Swiss Air: Can't remember anything except that the stewardess gave me one of those big toblerones

(that was way back in 1985)
AeroFlot: I don't believe that I actually flew on a Russian Airline (Also way back in 1982, i was still a toddler back then).
Tunis Air: The food was a bit spicy and had eggs (I prefer not to eat eggs on a plane

). Sevice was ok. Overall: Nothing special.
Oman Air: Probably the worst airline i've ever been with (maybe cuz it was very recent). Bad service, small seats, and food sucks. I went with them cuz that was the only airline that my company could find for me to Dubai (all other airlines were fully booked) as I had to attend a seminar for 1 week (That was last year, 2007).