I'll add some java to the mix:

package Foo;

import java.util.HashMap;

public class Bar {
   public static void main(String... args) {
      HashMap<String, HashMap<String, Integer>> map = new HashMap<Stri
+ng, HashMap<String, Integer>>();
      map.put("A", new HashMap<String, Integer>());
      map.get("A").put("A", 1);
      map.get("A").put("B", 2);
      map.put("B", new HashMap<String, Integer>());
      map.get("B").put("A", 4);
      map.get("B").put("B", 8);

      for(String k: map.get("B").keySet()) {
         System.out.println(k + " - " + map.get("B").get(k));
      }
   }
}
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Java would be the language I use most after Perl. When using Java, I often think about how much I miss the first class support for lists and hashes that we have in Perl. But, I find that when I don't have that first class support, I write things differently anyhow. If it is harder to make and use a hash, I won't use a hash as often.

That being said, I really love Java's hierarchy of collections. There are many powerful types of lists and hashes, and Generics really simplify things.