Learn a second (or third- the more the better) programming language. Labview is nice if you're doing a specific set of tasks, but it isn't a good general language. Pick up a book for other languages, contribute to an open source project, make your own simple open source project. Just putting some code on the Internet with your name attached to it makes you a top candidate for jobs. Just the fact that you can write a program, release it, and maybe update it is far more important to companies than your GPA in school, or the number of classes you took.
Some recommendations for languages:
scripting languages- usually easy to learn and very flexible, but tend to be slower. Used a lot for web sites and other places where speed isn't critical. My recommendation: Python. Other popular languages: Ruby, Perl, PHP
Low-level language: learn more about how the computer works. Harder to get right, easy to make programs that crash, but often used to make programs that require much higher performance, like games and operating systems. My recommendation: C. There's also C++ and Objective-C which are both extensions to C (Objective-C is used mostly for Mac and iPhone development), but I suggest learning C first so you understand what's going on. If you don't, then C++ and Obj-C will really confuse you.
Functional Language: been around for a long time, but only recently getting popular. Twitter, for instance, is switching a lot of their code over to a functional programming language. It forces you to think differently than the other languages, and you'll learn a lot from it. It's also easier to make programs that use multiple cores in functional languages. My recommendation: Scala. Other popular languages: Haskell, Lisp, OCaml (or Microsoft's implementation of OCaml, F#).