[svcw]

The MR16 is the most common bulb configuration in Asia and Europe.
Here’s what it looks like.
http://en.wikipedia.org/wiki/MR16

[Moltke]

No it isn’t.

I’m in Europe and 90+% (my best guess) of light fixtures are E-type. All of mine are, save for a few neon (flourescent) lights. Same for my office, and anyone I know. I have a few CFLs and they have the Edison screw.

Those MR16s are more of a designer/specialty variant. Just like in the US. The market share is small compared to the E-type (of all sizes), which is the *standard* for incandescent bulbs of any variety, including reflector bulbs etc. Trust me on this.

[thackney]

MR16 is the "bulb and reflector" portion of the lamp, not the base.

The MR16 lamps are available with an medium screw base.

What are MR16 lamps?
http://www.lrc.rpi.edu/programs/nlpip/lightingAnswers/mr16/whatAreMR16.asp