Aleris International, Inc. Watch

from SC 13G 1 page Exhibit 1 Joint Filing Agreement the Undersigned Hereby Agree That the Statement on Schedule 13g Filed by the Undersigned With Respect to the Common Stock of Aleris International, Inc. Is, and Any Amendment Thereto Signed by Each of the Undersigned Shall Be, Filed on Behalf of Each Undersigned Pursuant to and in Accordance With the Provisions of Rule 13d-1(k) Under the Securities Exchange Act of 1934, as Amended. Dated: February 22, 2005 Cr Intrinsic Investors, LLC By: /S/ Peter Nussbaum Name: Peter Nussbaum Title: Authorized Person Cr Intrinsic Investments, LLC By: /S/ Peter Nussbaum Name: Peter Nussbaum Title: Authorized Person S.A.C. Capital Advisors, LLC By: /S/ Peter Nussbaum Name: Peter Nussbaum Title: Authorized Person

from S-3/A ~50 pages Form of Purchase Agreement

from 8-K ~50 pages Agmt & Plan of Mgr.