apache httpd virtual hosts setup keep hitting the same VirtualHost

I'm trying to set up two virtual hosts. Here's my httpd config:

<Directory /Users/userX/dev/sandbox-2>
    Order deny,allow
    deny from All
    Allow from localhost
</Directory>

NameVirtualHost 127.0.0.1

<VirtualHost 127.0.0.1>
    DocumentRoot "/Users/userX/dev/sandbox-2"
    ServerName blah                                                        
</VirtualHost>                     

<VirtualHost 127.0.0.1> 
    DocumentRoot "/Users/userX/dev/sandbox"
    ServerName fooboar
</VirtualHost>

My problem is that, no matter which server name I try to access in my browser (blah or foobar) it'll serve from blah's DocumentRoot. However, if I were to comment out the the VirtualHost for blah, then it'll take me to foobar's DocumentRoot.

I'm running apache2 on a mac osx if that makes a difference.

Thanks!

---------- Post updated 05-25-12 at 04:19 AM ---------- Previous update was 05-24-12 at 09:09 PM ----------

Here's the solution with the help of a member from another forum.

# default container
NameVirtualHost *:80
<VirtualHost *:80>
  DocumentRoot "/var/www/html"
  ServerName localhost
  <Directory "/var/www/html">
    Options FollowSymLinks
    AllowOverride None
  </Directory>
</VirtualHost>

# Virtual host 1
<VirtualHost *:80>
  DocumentRoot "/Users/userX/dev/sandbox"
  ServerName foobar
  <Directory "/Users/userX/dev/sandbox">
      Options Indexes FollowSymlinks MultiViews
      AllowOverride All
      Order allow,deny
      Allow from all
  </Directory>
</VirtualHost>

# virtual host 2
<VirtualHost *:80>
  DocumentRoot "/Users/userX/dev/sandbox-2"
  ServerName blah                                                        
  <Directory "/Users/userX/dev/sandbox-2">
      Options Indexes FollowSymlinks MultiViews
      AllowOverride All
      Order allow,deny
      Allow from all
  </Directory>
</VirtualHost>

But regarding about the errors that I had with the config that was posted:

There were multiple issues..

The biggest one is that I had a typo. (I had fooboar, not foobar)

Second, I need to include the port in NameVirtualHost as well as in

Also, what helped a lot while debugging this was start httpd in debug mode which is:

apachectl -e debug