It looks somewhat like Titling Gothic FB Narrow.
Check out the website to see if it's the font you're looking for.

Here it is.

Sorry, but it's the result of my Firefox browser's rendering of search boxes in certain websites. I tried opening those websites in Chrome and IE but the fonts both browsers used were different from the one Firefox used. I do have checked the settings in Firefox. Obviously this is not Arial, Sans-serif or some monospaced fonts. Also, though I used MacType for rendering all fonts shown on the screen to make the text more easily and comfortably to read, but again this doesn't correspond to any font MacType used.

I'm sure that I've seen this font before; however, I totally forgot what the font's name is...

If anyone can help identify this font, I'll be grateful!

Thanks.