Daniel Radcliff/Emma Watson/Rupert Grint

[Carol]

Marianne wrote:
>  Sorry I'm a few days behind.  Have a cold that for a few days have
knocked me out.  It's he** getting old.

Carol responds:

Sorry about your cold, and I sympathize/emapthize with the "getting
old" part!

Marianne: 
> Speaking of age.  I work as a cashier at Wal-Mart.  I've ID'd 25
year olds for beer and cigarettes because they look like they are
anywhere from age 16 to 18.  I've ID'd 16 to 18 year olds trying to
buy beer and cigarettes and they look like they are over 25.  So age
shouldn't be a big factor for Daniel, Rupert and Emma.

Carol responds:
I agree. I know ten-year-old girls who are hitting puberty and
fifteen-year-old boys with more facial hair than Igor Karkaroff.
(Okay, I'm exaggerating on that last one, but only because their dads
make them shave.) Maybe it's the hormones in beef and milk these days,
but it's really hard to tell teenagers from grown-ups these days.

Marianne: 
> I didn't realize that Tom Felton was that old.  What else has he done?

Carol responds:

I haven't seen him in anything else, but his first credit was as
Peagreen Clock in "The Borrowers" in 1997 and his best-known
preformance outside HP, probably, is as Louis Leononwens (Jodie
foster's "son") in "Anna and the King." He was in a 2008 film called
"The Disappeared." He seems to have a nice little career going. You
can check out his filmography at the IMDb:

http://us.imdb.com/name/nm0271657/

Marianne: 
> How old was Bartie Crouch, Jr., supposed to be in GOF?  David
Tennant plays Bartie Crouch in GOF, and he's also the Dr. in Dr. Who,
second, third and maybe fourth season.  A bit of an age span for
Tennant to play. <snip>

Carol responds:
In the book, Barty Jr. about nineteen at his trial, which makes him
several years younger than Snape, who would have been about twenty-two
at the time. Since Snape is thirty-five at the end of GoF, Barty Jr.
would be a young man of about thirty-two at that time. 

The film, of course, obscures the time frame, so Barty Jr. looks no
different at Karkaroff's hearing than he does when he kneels
(uncanonically) at Voldemort's feet before the death of the old Muggle
caretaker, casts Mors Mordre to create the Dark Mark in the sky, or
turns back into himself when the Polyjuice Potion wears off.
Karkaroff, too, looks exactly the same, whereas in the book, his hair
and beard are black at his hearing and silver at the TWT. At any rate,
David Tennant was born in April 1971, which would make him about
thirty when the GoF film came out in 2005--the right age for the role,
or close enough, but they couldn't make him look like a boy of nineteen.

You can find his filmography at http://us.imdb.com/name/nm0855039/

Carol, who could spend hours exploring the links at the IMDb if she
had the time!