Robert
Downey
Jr,
who"s
Iron
Man
stormed
the
box
office,
had
a
tough
time
shooting
for
its
sequel
Iron
Man
2.
He
said
that
shooting
for
the
first
film
was
an
intuitive
process
and
it
was
important
to
have
things
right
for
the
second.
He
added
that,
he
hopes
the
hard
work
everyone
has
put
into
the
project
comes
across
on-screen.
Downey
said
that
he
is
not
at
all
worried
about
the
box
office
performance
of
the
second
film
and
his
stress
levels
are
at
an
all
time
high.
The
actor,
whose
last
film
Sherlock
Holmes
apart
from
doing
good
business
also
got
positive
reviews
said
that,
he
returned
for
the
sequel
because
of
director
Jon
Favreau.
He
added
that
two
of
them
do
good
work
together
and
he
wouldn"t
have
been
there
if
it
was
not
for
Favreau.
The
first
film
did
wonders
at
box
office
and
the
entire
cast
and
crew
is
expecting
similar
fate
for
Iron
Man
2,
which
releases
on
May
7.
In
addition
to
original
cast,
audiences
will
also
get
to
see
Scarlett
Johansson,
Mickey
Rourke,
Don
Cheadle
and
Sam
Rockwell
in
the
Iron
Man
2.
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