advnarayan, you can find a lot of that sort of information on
www.imdb.com, the Internet Movie Database. I've done a little searching and found:
Georges Wilson, the first Haddock, is still alive and acting, with a couple of projects to his credit for 2005.
Update: Georges Wilson passed away on the 3rd of February, 2010.
Jean Bouise, the second Haddock, died in 1989, and the film
Nikita, on which he worked, is dedicated to him.
The Calculuses:
Georges Loriot, the first Calculus, may be alive, but he hasn't made an appearance since 1970.
Update: M. Loriot died on the 8th of May, 1990. Intriguingly, IMDB notes that he appeared in both films, making an otherwise uncredited cameo as a guest at the ceremony at Marlinspike at the end. I can see that there's a man in a morning suit with glasses and a goatee beard who may be him, but I can't confirm it is him.
Félix Fernández, the first Calculus, died in 1966.
Like Loriot, Jenny Orléans (Castafiore) may be alive, but her last credit was 1974.
Update: Sadly Mme. Orléans died on the 12th of April, 2008.
Franky François and André Marié, the detectives for
Oranges have virtually nothing against them, and again are missing in action.
M. François seems to have been a clown or mime, partnered by James Hodges (and sometimes in a trio, with Liliane Hodges), and it was the pair of them who were intially offered the double act of the detectives. However Hodges demurred because he would have been required to shave his hair and beard for the role, so François took the rôle with André Marié (who, it would appear, dubbed both their voices).
The Hodges had a notable career as puppeteers, forming various companies to perform different styles of puppetry. James Hodges also worked in magic and illusions, and contributed items to the Musée Robert Houdin in Blois.
André Marié doesn't have many credits, but he did appear as a juggler in a 1966 film, so given the circles in which M. François seems to have travelled, it's quite possible that he too had a background in the circus/ mime/ performative theatre world.
I'd be happy for any and all survivors to have the fun of a cameo in the new movies - it would be a nice tip of the hat to their contributiuon to the overall
Tintin movie mythos.