Helvetica is most definitely my most favourite font out of all the fonts I've ever used. I just love how stream line and minimal it is. It fits nearly every situation and works with nearly everything. There's something really cool about this font which makes it stand out. Most people probably don't look at fonts as art, but some do. You'll see the Helvetica font used in many different things so watch out for it.
Leave a link to your favourite piece of Helvetica art if you find any, in the comments.