If you are not familiar with PCSX team, they create open source emulators for PlayStation consoles, both PlayStation 1 and 2. You can get latest version of emulator here: Windows (8.53MB) and Linux (4MB).  The Mac release is currently at version 0.9.7 Alpha. Since the main problem for PS2 emulation has always been The console's multi-processor and how it handles memory and task scheduling, it is recommended that you run the emulator on x64 systems.

Here are the core changes in version v1.0 for Windows:

•    Video timing adjustments.
•    microVU fixes for Metal Gear Solid 2 and others.
•    General speedups.
•    microVU speedup.
•    New GIF unit that mimics the real one better.
•    microVU elementary function bug fixed (affecting Valkyrie Profile 2, Radiata Stories and Star Ocean 3).
•    Implemented Multi-Threaded VU! A new speed hack with almost 100% compatibility with games, using a third core to run the VU1 unit separately.
•    CDVD fixes (Time Crisis boots now).
•    Added support for progressive scan timings.
•    Path 3 arbitration and timing refinements.
•    Added Finnish, Malaysian, Korean, French, Indonesian, Italian, Japanese and Polish translations.

And Here are the OnePad changes in version 1.0 for Linux:
•    New dialog configuration panel.
•    Improved support of various pad (sixaxis)/mouse/wiimote.
•    Added support for more controllers.
•    Added support for pressure-sensitive buttons.

If you're gonna try this emulator be sure to check the Compatibility list, which features around 2,300 games,  and 1,697 (73,81%) of those are marked playable, which means you can play entire game without any glitches, bugs or chrashes.

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