What angle of view/focal length(s) do you love to shoot?

It's always interesting to me how some people seem to gravitate to certain focal lengths, even within the same genre of photography. Some can't live without their 50mm normal lens for street, others need their 35mm. Some swear by their 105mm for portraits, others prefer to go longer.

What about you?
What focal lengths do you find yourself shooting most often at, and/or bring about your favorite images?
What lenses do you love to use for said focal lengths?

Feel free to share images demonstrating why you love the perspectives granted by said lenses.

Things will obviously vary depending on what type of photography you do, but for me, my Lumix 20mm(40mm equiv) f1.7 and Olympus 45mm(90mm equiv) f1.8 make an excellent 2-lens kit.

20mm(40mm equiv) gets me pretty wide:
<a href="http://www.flickr.com/photos/37605747@N07/7712890822/" title="reee-6 by napilopez, on Flickr"><img src="http://farm9.staticflickr.com/8288/7712890822_3e5006ba2e.jpg" width="500" height="281" alt="reee-6"></a>

While still being a good "normal" lens for street photography, relatively free of perspective distortion on people:
<a href="http://www.flickr.com/photos/37605747@N07/7347464164/" title="FunP-10 by napilopez, on Flickr"><img src="http://farm9.staticflickr.com/8167/7347464164_b3140b3015.jpg" width="500" height="333" alt="FunP-10"></a>

The 45mm(90mm equiv) makes for beautiful portraits close up:
<a href="http://www.flickr.com/photos/37605747@N07/7606390266/" title="Pups-3 by napilopez, on Flickr"><img src="http://farm9.staticflickr.com/8421/7606390266_2ff0db2f00.jpg" width="500" height="333" alt="Pups-3"></a>

Or allows me to isolate my subject within it's environment from further back:
<a href="http://www.flickr.com/photos/37605747@N07/7347430298/" title="A Stroll through Campus. by napilopez, on Flickr"><img src="http://farm8.staticflickr.com/7225/7347430298_9da82536f7.jpg" width="375" height="500" alt="A Stroll through Campus."></a>

Interestingly, I actually use my 45mm a lot more for street photography, as I prefer to remain inconspicuous to my subjects, and I like the option of greater DoF isolation to direct the eyes. It's my favorite and most used lens. But I would sell it before my 20mm because of the latter's extreme versatility(not to mention tiny size for Micro Four Thirds). I think I might like a fast 17/17.5mm for a little bit extra width, but I'm torn.

What about you?