Alexandra, is the "Swan Lake" video you mention the one with Zelensky as the Prince?
I loved the sets and costumes of that production (really gorgeous), and liked Zelensky, but I'm afraid I found Makhalina a bit too cold...
About Isabelle Guerin, the videos I've seen are:
-the Bayadere video Jeannie wrote about (with also Hilaire as Solor and Platel as Gamzatti)
-the Balanchine celebration "Apollo" Steve wrote about (pity that that Apollo isn't as good as his Terpsichore in my opinion...

)
-a video of Nureyev's "Cinderella" in which she plays one of the ugly sisters (not a big role, and I don't like much Nureyev's choreography, but it's an opportunity to see that she's as good in comical roles
as in more serious ones)- the other main roles are danced by Sylvie Guillem (Cinderella), Charles Jude (the Prince- really really cute

), Monique Loudieres (the other evil sister), Nureyev himself (the producer), and Georges Piletta (the mother, in travesti)
-a video of Petit's "Notre-Dame de Paris" in which she dances Esmeralda (Legris is Phoebus, Hilaire is Frollo and Le Riche is Quasimodo)
I think that she's been filmed recently in Preljocaj's "Le Parc", but don't know if a video will be released or if it will just be shown on TV. Last year, her and Legris were filmed in Petit's "L'Arlesienne" for the French TV (and I missed it

).