I think there are probably other profilers [any for free?! :) ], but stumbled across this one today.

Update 09/10/04 - here's one that shows memory object graph, call graphs, etc. Very cool.

Download details: CLR Profiler (v2.0)

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.NET Memory Profiler - Find Memory Leaks and Optimize Memory Usage in Programs Written in C#, VB.NET or any other .NET Language

Update: Sure enough, more searching found this free one.

Application Profiler from gotdotnet.com

I can't get this to work however on my dev machine. A comment in the download area asks about compatibility with .net 1.1 I get error about MSVCR70.DLL not found.

...and still one more - from SourceForge.net
This one seems to be strictly a performance profiler (% time in functions, elapsed time, etc)

NProf - the .NET profiler

This works "out of the box", but does not have memory consumption details.