For WRPGs give The Elder Scrolls IV: Oblivion a try, it's a really fun game and you'll probably like it if you think Fallout 3 looks good (that's another good WRPG you should get).
Now JRPG, someone already asked this but it's pretty important if you say which Final Fantasy game you played, if any. Also give White Knight Chronicles a try when it's released to North America
And also you can try Kingdom Hearts for an ARPG







