Here are some that you could look at:
Crew cut: This is a classic and works well for men who tend to have chiseled looks. It is cool and can work if the man in question has a good jaw line or else it can really accentuate the fleshiness of the face.
Medium cut: Hair styled in medium length with a side part is conservative and looks really good with formal wear. The hair can be washed to give it a springy look or slicked back with gel to achieve a severely sexy look. This can work on men of most ages and with different kinds of face shapes.
Long hair cut in waves: This is a look that not all men can pull off. Plus it is a hairstyle that tends to need a lot of maintenance. But with the right kind of cheekbones this cut looks stunning. What is more during the hotter days of the year, you can pull it back into a cool looking low pony tail. May not always be suitable for the more conservative workplaces.
Razor cut: This is more of new age look and works better with younger men who tend to be more aggressively casual in their way of dressing. With a subtle hint of stubble artfully grown it can give a man a bad boy look.