Games That Leave You with "A Rapidly Beating Heart"

A friend and I were discussing about an upcoming Nintendo DS game titled "Dokidoki Majo Saiban" when the question on what "Doki Doki" meant, came about.

For starters, this particular game has the distinction of being probably the first non-homebrew ero (you know what I mean) Nintendo DS game with a Cero C (Ages 15 and up) rating plastered on its cover. No wonder it got all those Japanese otaku all excited. Purchase details: here.

Anyways, Wikipedia defines Doki Doki to be an onomatopoeia for "a rapidly beating heart", and just so you don't know, onomatopoeia is a word (or a group of words) that imitates the sound that it is describing. I don't seem to recall my heart beating like "do-ki do-ki" whenever I run or play badminton. LOL.

The term Doki Doki has seen some use in more decent video game titles. For example, did you know that Super Mario Bros 2 (NES) otherwise known as Super Mario USA (Famicom) is a remake of Yume Kojo: Doki Doki Panic (in English = Dream Factory: Heart Pounding Panic)? Because of this, Super Mario Bros 2 is a radical shift from that of the first Super Mario Bros game.

What other Doki Doki titled games are out there? I leave it to you to find out (hint: use Google)