I cannot fully remember how often I have seen Aleksej attending testdays. It looks like he is always around. Thanks for all your time spending on triaging so many bugs!
Aleksej not only does localization, and fabulous triage and verification -- he coordinates and moderates for many test days and bug days as part of the QA community. He is always ready to answer questions on irc and give people good advice in bugs! Here is his Bugzilla profile. Thanks Aleksej!
Aleksej has been doing triage for Firefox and occasionally for SeaMonkey; he has also done L10N not only in Russian but also in Esperanto.