mmmm... Chimay....
Anyway, German is definately (Paulaner) Salvator, I am having one now and it is probaldy my favourite Bier. Two pints of these in a Stein will surely get you singing!
Irish is Smithwick's all the way.
If you need an English drinking song, it has to be The Anachreontic Song, the melody of which is also used by aliens from and around Betelgeuse.