Fullmetal Alchemist OVA question!?

Question

Ok I just watched a Fullmetal Alchemist OVA for the fisrt time & i've got some questions.
First: What exactly is an OVA (& what does it stand 4)?
How many did they make for Fullmetal Alchemist?
Did they make any in english? (if not do they intend on doing any?)
are they done make them (for FMA)?

& for those who have watch the second one (with the kids going across town to see there grandpa (Edward Elric):
what exactly happend in that? i was kind of confused by it. like why did the children look just like Ed, Al, & Winry? & the ones that look like Mustang, Breda, Hughes, ect? Why was there a poster of the Fullmetal Alchemist Movie & Ed & Als pictures on the magazines?
I have some ideas on why but i would like some opions.
OH here is some links to the OVAs i watch (i hope they work i apologies if they don't):

http://www.youtube.com/watch?v=QkaZ1rOH6mE

http://www.youtube.com/watch?v=g2-ScBjECrY

http://www.youtube.com/watch?v=sxPlIHIlPnI

Thank u 4 ur time!

Answer 1

for a better understanding http://en.wikipedia.org/wiki/Original_Animated_Video

I think there were 5

Chibi

Kids
Live action
Humuculi vs State Alchemist
Reflection
I Believe they are on an extra disc when you buy the FMA Box set
are done making them ehh it's kind of hard to say OVA kind of pop up ever now and again.

They are in the real world