Tell me this building's name please if you know. I watched this on December in 2011.
http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc7/s720x720/432062_382818915062354_299200130090900_1486026_314018681_n.jpg

I can't recognize this building too:ohno:
http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/s720x720/420960_382818975062348_299200130090900_1486027_150638545_n.jpg

What is this blue one?
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/s720x720/420517_382818988395680_299200130090900_1486028_838881228_n.jpg

I went to Doha to seach skyscrapers last year. I'm collecting data about buildings over 100m. I can't recognize neme of these. If you have information, please let me know.
http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/s720x720/418382_382819045062341_299200130090900_1486029_664113150_n.jpg

I went to Doha to seach skyscrapers last year. I'm collecting data about buildings over 100m. I can't recognize neme of these. If you have information, please let me know.
http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/s720x720/418382_382819045062341_299200130090900_1486029_664113150_n.jpg

http://www.skyscrapercity.com/showthread.php?t=397717

What is this blue one?
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/s720x720/420517_382818988395680_299200130090900_1486028_838881228_n.jpg

http://www.skyscrapercity.com/showthread.php?t=799636

I don't know about the rest ..

Thanks a lot mj12!! Indeed, they are Samriya twin towers and Lotus Tower.

I believe the tower in post #2 is called Diplomatic Tower. Either this or the one besides it.

Many thanks Jum Juma!!
I have found the name and information thanks to your kind help.

It must be Diplomat Tower, otherwise One Diplomat Tower.
Height:123m
Architect:MZ & Partners

Tower post #1 is called QIIB to finance City Tower.
Thanks for information!