SQL & PL/SQL

Hi gurus,
I just got help from your guys fixing my dynamic sql problem. What I am doing in that function is to return a single string from multiple rows and I use it in the select statement. It works fine once the problem was solved. But is there any way in Oracle to do this in the select statement only? I have a table that stores incidents (incident_id is the PK) and another table that stores the people that are involved in an incident.

Incident_table
(incident_id number PK);

Incident_people_table
(incident_id number PK/FK,
person_id number PK);

Now in a report, I need to return the multiple rows of the Incident_People_table as a single string separated by a comma, for example, 'Ben, John, Mark'. I asked the SQL Server DBA about this and he told me he can do that in SQL Server by using a variable in the sql statement and SQL Server will auomatically iterate the rows and concatenate the result (I have not seen his actual work). Is there a similar way in Oracle? I have seen some examples here for some similar requests using the sys_connect_by_path, but I wonder if it is feasible in a report sql that is already rather complex. Or should I just stick to my simpler funcion?

Thanks.

Ben