A good question, and it's hard to see how anbody could contest the correct answer.
Although in the spirit of nitpicking, I could argue that the format one should
use would include the column list in the INSERT statement. And the semicolon statement terminator, that in a future version will no longer be optional.
INSERT dbo.mytable (Column1, Column2)
VALUES ('Test', 'Test2'), ('Test3', 'Test4'), ('test5', 'test6');
EDIT: Removed the color tag after a few failed attempts to use it - I hope just using bold text emphasises the changes sufficiently.
EDIT: Added back the color tag after Paul told me what I did wrong.
Hugo Kornelis, SQL Server/Data Platform MVP (2006-2016)
Visit my SQL Server blog: http://sqlblog.com/blogs/hugo_kornelis