That pretty much does it:

#!/usr/bin/perl -lw
 
use Data::Dumper;
 
 
my %info;
 
while(<DATA>){
$info{$1}=$2 if /(\w+)[ :](?:is|at)? (.*)/;
}
 
print Dumper(\%info);
 
 
__DATA__
name is Doug
eyes: brown
email at bill@hotmail.com


##### Output with each dataset:
#Fred Flintstone
$VAR1 = {
          'email' => 'fflinstone@hotmail.com',
          'name' => 'Fred',
          'eyes' => 'black',
          'era' => 'prehistoric'
        };
 
#Doug
$VAR1 = {
          'email' => 'bill@hotmail.com',
          'name' => 'Doug',
          'eyes' => 'brown'
        };
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Addendum: Updated regex to get rid of space at beginning of data.