If you lost money through either ATM Capital or Focus Point Capital, please contact Griffin and Miller (http://www.griffin-miller.org/).
I'm not saying you shouldn't contact them if you lost money through other fake investment companies, but I don't know any other confirmed boiler rooms myself.

I was just contacted by another company which I suspect to be a boiler room:
TYP Capital Inc.
11 F, Daiba Frontier Bldg,
2-3-2, Daiba, Minato-ku,
Tokyo

Tel: 81-3-4550-6881
Fax: 81-3-4550-6882
Email: [email protected]
http://www.typcapital.com/

I can't be 100% sure, but they used the same scripted intro, are registered nowhere, no VAT number etc. Better be safe than sorry!