How do you find SQL Server version info

There are five place you can find a SQL Server version information.

--1 select @@version

Microsoft SQL Server 2008 R2 (RTM) - 10.50.1617.0 (Intel X86) Apr 22 2011 11:57:00 Copyright
(c) Microsoft Corporation Enterprise Evaluation Edition on Windows NT 5.1 <X86> (Build 2600: Service Pack 3)

--2 exec sp
exec sys.sp_MSgetversion
10.50.1617.0 1 3

 -- 3 SQL Server Logs
Date 09/01/2013 07:12:16Log SQL Server (Current - 09/01/2013 17:18:00)Source
ServerMessage
Microsoft SQL Server 2008 R2 (RTM) - 10.50.1617.0 (Intel X86) Apr 22 2011 11
:57:00 Copyright
(c) Microsoft CorporationEnterprise Evaluation Edition
on Windows NT 5.1 <X86> (Build 2600: Service Pack 3)

-- 4 SERVERPROPERTY
SELECT SERVERPROPERTY('edition'),SERVERPROPERTY('ProductVersion'),SERVERPROPERTY('ProductLevel')Enterprise Evaluation Edition 10.50.1617.0 RTM

--5 exec sys.xp_msver

Still you can find sql server version information from Windows Registry but i do not want to expose more on it here.