Nikon 1.4f 50mm or Nikon 1.8f 35mm?

I consider myself an aspiring photographer and am looking to purchase a new lens. I currently own a D90 with the standard 3.5-5.6f lens and a 3.5f 60mm macro. The more I research the more I come back to either the 1.8f 35mm or 1.4f 50mm. First of all, does the 1.4 f-stop make that much of a difference in bokeh? From pictures I've seen, both lenses seem to have a sufficient amount, but will the 1.4 really look THAT much better? If it will, I wouldn't mind shelling out another buck-fifty. And would the 35mm or 50mm focal length be more versatile? Do I even want it to be versatile?

The 50mm lens will give you shallower depth-of-field because of its 50mm focal length and slightly larger aperture. The 50mm focal length is better for portraits than the 35mm, but the 35mm is better for general 'snapshooting'.

Go with the one that fits your uses best. Both lenses are superb in what they do. Nikon also makes a 50mm f/1.8 if you're interested in that, too.

For a crop-sensor dSLR, the 35mm will be more versatile as it's nearer to normal. Personally, I would go for the f/1.4. There's a whole world of difference buried in that half-stop.

Without saying what you want to shoot, impossible to say. Your definition of versatile is subjective, it may not be what I consider to be versatile.

The 35mm will obviously be better for wider shots, but the 50mm will be better for stuff further away and for portraits. What is it you want to do?

I own both lenses and a D90 and can say that they are both excellent lenses, but I've found they have different uses.

35mm f/1.8: I use this for events so that I can shoot in smaller spaces, use a slower shutter speed and have a little more wiggle room with my depth of field, all due to the focal length. Nice bokeh isn't as easy to obtain when shooting a portrait and you have to watch for distortion if you get too close to a subject.

50mm f/1.4: This is an awesome lens for portraits. I'd say 75% of my work has been done with this lens. It gives beautiful bokeh and soft background when shooting portraits. It's also a decent lens for everyday use, but can be a little "long" for some situations.

As for versatility, the 35mm wins there, but like you say, do you want versatile? Decide what you're going to be shooting and buy the right lens for that purpose. If you really wanted versatile, you'd get an 18-200, but since you're not considering that lens, sounds like you have something a little more specific in mind.

What do you want to photograph?

50mm has better perspective when clicking portraits than 35mm. However you already have a 60mm lens which gives even better perspective (though a little slower lens)
35mm will give the angle of view similar to 50mm (when used with a film slr) on your camera.