Sometimes I want to start with clean information. I can always add back in the owner and identifiers.

DECLARE @vcTableName varchar(128)
SET @vcTableName = 'dbo.test table'
SET @vcTableName = 'mytable.test'
SET @vcTableName = QUOTENAME('mytable.test table')
IF CHARINDEX('[', @vcTableName) > 0
BEGIN
SET @vcTableName = REPLACE(REPLACE(@vcTableName, '[', ''), ']', '')
END
IF CHARINDEX('.', @vcTableName) > 0
BEGIN
SET @vcTableName = SUBSTRING(@vcTableName, CHARINDEX('.', @vcTableName) + 1, LEN(@vcTableName) - CHARINDEX('.', @vcTableName))
END
PRINT '***' + @vcTableName + '***'
PRINT 'dbo.' + QUOTENAME(@vcTableName)