Consider for a moment how your phone is currently being answered. Professional courtesy is quite often not the standard for many college students. An abrupt "Yeah!" could be listed among the more courteous greetings. The more outrageous remarks will often buy you a major black mark in the professionalism category—even if it was your roommate answering your phone and acting crazy. A simple "This is ____" is always a pleasant change for a college student call. Make the change today, before the next (or first) employer phone call. If you have a landline, you should also encourage your roommate to do the same.
You can also make use of a 3rd party option and use a crowdsourcing professional voicemail greeting provider such as Fiverr to record your voicemail greeting. Fiverr is flexible, fast and affordable and at just $5, you have the option of choosing between hundreds of professional voice-over actors who can record your script. You can also find professionals who can record voicemail greetings in various languages, accents, etc. at very affordable prices and deliver the recording within 3 working days or less.

Does your voicemail greeting convey to those potential customers a real feel for your company? Or is it sleep-inducing?
9. Outgoing Message with Samuel L. Jackson Treatment. Stephen Colbert asked Samuel L. Jackson to record his infamous voice on his outgoing message recording.