Random Enum in C#

I wrote this because.. well.. I wanted to see how well it would work.. 8D

private static readonly Random oti = new Random( Guid.NewGuid().ToByteArray().Sum( b => b * b.GetHashCode() ) );

private static readonly ReaderWriterLockSlim otia = new ReaderWriterLockSlim( LockRecursionPolicy.SupportsRecursion );

public static T RandEnum() {
if ( !typeof( T ).IsEnum ) { return default( T ); }
var names = Enum.GetNames( typeof( T ) );
try { otia.EnterWriteLock(); return ( T )Enum.Parse( typeof( T ), names[ oti.Next( 0, names.Length ) ] ); }
finally { otia.ExitWriteLock(); }
}