While the 401(k) plan you have access to at your place of employment is a a "better-than-nothing" retirement plan doesn't mean that you should ignore the benefits of investing for your future.
There are three basic problems with the retirement plan (and how you use it) known as the 401(k). You can read the full article here.
What to keep in mind about your 401(k) plan and rollovers:
If you have a 401(k) plan use it and if possible, use it to its fullest.
Get your financial house in order while you are working, especially if you have only been in your 401(k) plan for less than fifteen years.
Rollover your old 401(k) into a Traditional IRA within 60 days and be careful with the paperwork.
If you have more money to invest, open a Roth as well.